CN110109499B - Universal power connector for controlling voltage - Google Patents
Universal power connector for controlling voltage Download PDFInfo
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- CN110109499B CN110109499B CN201910553342.9A CN201910553342A CN110109499B CN 110109499 B CN110109499 B CN 110109499B CN 201910553342 A CN201910553342 A CN 201910553342A CN 110109499 B CN110109499 B CN 110109499B
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- 238000009966 trimming Methods 0.000 claims abstract description 74
- 239000003381 stabilizer Substances 0.000 claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000005476 soldering Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is DC
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
The invention discloses a universal power connector for controlling voltage, wherein a circuit board, a precise trimming potentiometer VR2, a precise trimming potentiometer VR3, a potentiometer VR1, a switch S1, double-row needle bases JP2 and a jumper cap are arranged in a shell of the universal power connector, the switch S1 is connected with a switch button, the potentiometer VR1 is connected with a potentiometer VR1 knob, and the circuit board is connected with an input end lead and an output end lead; the circuit board comprises a bonding pad group JP1, a bonding pad group JP3, a light emitting diode DS1, a double-row needle seat JP2, a voltage stabilizer W1, a triode Q1, a resistor R3 and a resistor R4. The invention is convenient to assemble, debug and use, and is beneficial to popularization and application of the universal power supply. The resistor value has high precision, small error, high stability, small volume, low cost, convenient configuration, simple circuit and convenient voltage precision improvement and voltage regulation.
Description
Technical field:
the invention relates to a connector, in particular to a universal power connector for controlling voltage.
The background technology is as follows:
the patent of the invention of the applicant (a general power supply controlled by DC electric appliances and application thereof) (patent number is ZL 201610671197.0) (the power supply is hereinafter referred to as general power supply), which can be provided with multiple bands, is perfect in fault treatment and can be used with ease, but is difficult in popularization and application. The following points are provided:
1. the voltage stabilizer W in the figure 1 of the patent specification is arranged in the DC electric appliance E5, but in reality, the DC electric appliance E5 (including a notebook computer, a DC electric soldering iron, a mobile phone and the like) is not provided with the voltage stabilizer W, a general power supply cannot be used, if the voltage stabilizer W is additionally arranged, the operator needs to open a chamber to break a belly, the operator needs to find an element attachment, and the operator needs to reform a connector and a wire, so that the popularization and the application are difficult.
2. The voltage stabilizer W adopted in the patent has a limited value range, and is difficult to find a voltage stabilizer W with a proper specification, particularly, under the condition of low voltage (such as below 2.5V), the voltage stabilizing effect is poor, and the output voltage Vo is difficult to flexibly regulate and set from 0 to the top.
3. In the past, the performance and advantages of the resistor are not fully utilized in the aspect of voltage setting, namely, the equivalent relation between the resistance value and the voltage value, the voltage is usually finely regulated by the regulated resistor, the debugging is very complicated, and the accurate requirement can be met only by one machine for one adjustment. The existing power supply can not realize direct control of the voltage value of the resistance value, can not unify standards, and is not popularized and applied.
4. The existing power supply has poor expansion function, can not be directly controlled by a photosensitive element (such as a photoresistor, a thermistor and the like), and has difficult voltage conversion.
The invention comprises the following steps:
the invention aims to overcome the defects of the prior art and provide a universal power connector.
The technical scheme provided by the invention is as follows: the utility model provides a general power connector of control voltage, its characterized in that includes the casing, is equipped with circuit board, accurate fine setting potentiometer VR2, accurate fine setting potentiometer VR3, potentiometer VR1, switch S1, double needle file JP2, jumper wire cap in the casing, switch S1 connects the switch button, potentiometer VR1 connects potentiometer VR1 knob, the circuit board is connected with the input wire that links to each other with plug P1 and with the output wire that links to each other with DC electrical apparatus E5; the circuit board comprises a bonding pad group JP1, wherein a pin a of the plug P1 is connected with a 1 bonding pad of the bonding pad group JP1, the 1 bonding pad of the bonding pad group JP1 is connected with a light emitting diode DS1 and a 1 bonding pad of the bonding pad group JP3, the 1 bonding pad of the bonding pad group JP3 is connected with a load LR of a DC electric appliance E5, and the light emitting diode DS1 is connected with a resistor R1; the pin b of the plug P1 is connected with the 2 pads of the pad group JP1, the 2 pads of the pad group JP1 are connected with the switch S1, the switch S1 is connected with the pin 1 of the double-row needle seat JP2, the pin 4 of the double-row needle seat JP2 and the precision trimming potentiometer VR2, and the precision trimming potentiometer VR2 is connected with the pin 5 of the double-row needle seat JP 2; the 3 feet of the double-row needle seat JP2 are connected with the potentiometer VR1, the 2 feet of the double-row needle seat JP2 are connected with the voltage stabilizer W1, and the 6 feet of the double-row needle seat JP2 are connected with the precision trimming potentiometer VR3 and the collector electrode of the triode Q1; the base electrode of the triode Q1 is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with 8 pins of a double-row needle seat JP2, and 7 pins of the double-row needle seat JP2 are connected with 2 pads of a pad group JP 3; the c pin of the plug P1 is connected with the 3 pad of the pad group JP1, the 3 pad of the pad group JP1 is connected with the resistor R1, the potentiometer VR1, the voltage stabilizer W1, the precision trimming potentiometer VR3, the ground GND, the emitter of the triode Q1, the resistor R4, the 3 pad of the pad group JP3, and the 3 pad of the pad group JP3 is connected with the load LR of the DC electrical appliance E5.
Further, the potentiometer VR1 is a potentiometer with voltage manually adjusted, the resistance of the potentiometer is the same as the rated voltage of the DC electrical appliance E5, and the potentiometer VR1 is connected to realize manual voltage adjustment by shorting the jumper cap through the 1 pin of the double-row needle seat JP2 and the 3 pin of the double-row needle seat JP2 or shorting the jumper cap through the 3 pin of the double-row needle seat JP2 and the 4 pin of the double-row needle seat JP 2.
Further, the voltage stabilizing value of the voltage stabilizer W1 is the same as the rated voltage value of the DC electric appliance E5, and the 1 foot through the double-row needle seat JP2 and the 2 foot through the double-row needle seat JP2 are in short circuit by the jumper cap or the 2 foot through the double-row needle seat JP2 and the 4 foot through the double-row needle seat JP2 are in short circuit by the jumper cap.
Further, the precision trimming potentiometer VR2 is a trimming resistor, and is short-circuited through the 5 pins and the 7 pins of the double-row needle seat JP2, and the 2 pads of the pad group JP3 are controlled by an external remote control signal VJ.
Further, the precision trimming potentiometer VR3 is a trimming resistor, and the resistor value of the trimming resistor is adjusted to be the same as the rated voltage value of the DC electrical appliance E5, so that the 4 pins of the double-row needle seat JP2 and the 6 pins of the double-row needle seat JP2 are in short circuit.
Further, the precision trimming potentiometer VR3 is a trimming resistor, the 5 pins of the double-row needle seat JP2 and the 6 pins of the double-row needle seat JP2 are in short circuit, the precision trimming potentiometer VR2 and the precision trimming potentiometer VR3 are connected in series, the resistance value of the precision trimming potentiometer VR2 is adjusted to be the same as the lower limit voltage value required by the DC electrical appliance E5, and the resistance value of the precision trimming potentiometer VR3 is adjusted to enable the total resistance value of the precision trimming potentiometer VR2 and the precision trimming potentiometer VR3 to be the same as the upper limit voltage value required by the DC electrical appliance E5.
Further, 5 feet of double needle file JP2 and 6 feet short circuits of double needle file JP2, 7 feet of double needle file JP2 and 8 feet short circuits of double needle file JP2, accurate trimming potentiometer VR2 and accurate trimming potentiometer VR3 establish ties mutually, triode Q1's collecting electrode and projecting electrode connect accurate trimming potentiometer VR 3's both ends.
Further, 1 foot of double needle file JP2 and the 3 foot short circuit of double needle file JP2, 5 feet of double needle file JP2 and the 7 feet short circuit of double needle file JP2, 4 feet of double needle file JP2 and the 6 feet short circuit of double needle file JP 2.
Further, the shell is formed by connecting an upper shell and a lower shell.
Further, a wire sheath cavity is arranged in the shell, and the wire sheath is arranged in the wire sheath cavity.
The beneficial effects of the invention are as follows:
1. the invention is a tie which is connected between a plug P1 of a general power supply and a DC electric appliance E5 and has the functions of voltage regulation and expansion, the DC electric appliance E5 is not required to be modified by opening a chamber and breaking a belly, but is directly connected with a connector by a wire, and the voltage corresponding to the DC electric appliance E5 is controlled to be output by regulating resistance and mode conversion. The invention is convenient to assemble, debug and use, and is beneficial to popularization and application of the universal power supply.
2. The resistor voltage control has the following advantages compared with the voltage control of the voltage stabilizer:
the material, production and application consistency of the resistor are better than those of other electronic elements. The method comprises the following steps: parameters for producing one or more batches of resistors may be kept consistent; and two,: the resistance value can be finely divided, and the resistor with any resistance value can be produced; and thirdly,: the resistance value has high precision, small error, less influence by temperature change and high stability; fourth, it is: small volume, low cost, convenient configuration and simple circuit. The characteristic of the resistor is utilized to directly change the resistance value so as to control the universal power supply to output corresponding voltage.
The resistance value can be regulated from 0KΩ, so that the output voltage Vo can also be increased gradually from 0V, and a certain value between low and high of the output voltage Vo can be accurately output.
The invention is released from the complicated voltage debugging of the prior power supply, the debugging is completed only by determining the resistance value, and the voltage debugging is performed back and forth under the condition that the resistor is not required to be powered up during installation.
3. The invention adopts the resistor combination of different modes, helps the universal power supply to realize multifunction, and improves the application range of the universal power supply.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an electrical schematic of the present invention;
FIG. 3a is an electrical schematic diagram of a conventional voltage regulation and voltage conversion mode according to the present invention;
FIG. 3b is an equivalent diagram of FIG. 3 a;
fig. 4 is an electrical schematic diagram of a conventional manual voltage regulation and external control voltage regulation mode according to the present invention.
The specific embodiment is as follows: the following detailed description of specific embodiments of the invention refers to the accompanying drawings:
as shown in fig. 1, a universal power connector for controlling voltage comprises a casing, wherein the casing is formed by connecting an upper casing 3 and a lower casing 16, a circuit board 12, a precision trimming potentiometer VR2 6, a precision trimming potentiometer VR3 7, a potentiometer VR1 15, a switch S1 4, a double-row needle seat JP2, a jumper cap 14, a switch button 5 connected with the switch S1 4, a potentiometer VR1 knob 8 connected with the potentiometer VR1, an input end lead 11 connected with the circuit board 12, an output end lead 17 connected with the input end lead 11, a plug P1 2 connected with the input end lead 11, and a DC electrical appliance E5 connected with the output end lead 17 are arranged in the casing. A wire sheath cavity 9 is arranged in the machine shell, and a wire sheath 10 is arranged in the wire sheath cavity 9.
As shown in fig. 2, the circuit board 12 includes a pad group JP1, the a pin of the plug P1 is connected to 1 pad of the pad group JP1, 1 pad of the pad group JP1 is connected to the light emitting diode DS1 and 1 pad of the pad group JP3, 1 pad of the pad group JP3 is connected to the load LR of the DC electric appliance E5, and the light emitting diode DS1 is connected to the resistor R1. The pin b of the plug P1 is connected with the 2 pads of the pad group JP1, the 2 pads of the pad group JP1 are connected with the switch S1, the switch S1 is connected with the pin 1 of the double-row needle seat JP2, the pin 4 of the double-row needle seat JP2 and the precision trimming potentiometer VR2, and the precision trimming potentiometer VR2 is connected with the pin 5 of the double-row needle seat JP 2; the 3 feet of the double-row needle seat JP2 are connected with the potentiometer VR1, the 2 feet of the double-row needle seat JP2 are connected with the voltage stabilizer W1, and the 6 feet of the double-row needle seat JP2 are connected with the precision trimming potentiometer VR3 and the collector electrode of the triode Q1; the base of the triode Q1 is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with 8 pins of a double-row needle seat JP2, and 7 pins of the double-row needle seat JP2 are connected with 2 pads of a bonding pad group JP 3. The c pin of the plug P1 is connected with the 3 pad of the pad group JP1, the 3 pad of the pad group JP1 is connected with the resistor R1, the potentiometer VR1, the voltage stabilizer W1, the precision trimming potentiometer VR3, the ground GND, the emitter of the triode Q1, the resistor R4, the 3 pad of the pad group JP3, and the 3 pad of the pad group JP3 is connected with the load LR of the DC electrical appliance E5.
In fig. 2, 3 circuits are led out from the plug P1 of the universal power supply, wherein the first circuit (pin a is led out) is a universal power supply output voltage Vo circuit, and supplies power to the load LR of the DC electrical appliance E5, the light emitting diode DS1 is a power indicator lamp, and the resistor R1 is a current limiter thereof; the second circuit (the pin b is led out) is a constant current Iv (1 mA) provided by a general power supply to the invention, and the voltage Vr obtained by the connected voltage stabilizer W1 or various resistance combination circuits is used for establishing a quasi-voltage VG through various short circuits of a switch S1 and a double-row needle seat JP2 to control the general power supply to output a corresponding output voltage Vo (see ' 2, establishment of quasi-voltage VG and ' 3 and purification quasi-voltage VG circuit ' in the specification of a general power supply controlled by a DC electric appliance and application thereof); the third path (the pin c is led out) is the common ground of the invention and the DC consumer E5.
The function of each combination of potentiometers and resistors is as follows (see fig. 2):
the potentiometer VR1 is a potentiometer with voltage manually adjusted (see fig. 1 for actual operation, the knob 8 of the potentiometer VR1 is rotated, the resistance of the potentiometer VR1 can be adjusted to adjust the output voltage Vo), the resistance of the potentiometer is selected to be the same as the rated voltage value of the DC electrical appliance E5 connected with the present invention (only the same as the rated voltage value), the 1-pin and 3-pin (or 3-pin and 4-pin) of the double-row needle holder JP2 are short-circuited by using jumper caps (the other pins which are not mentioned are empty pins, and the same applies below), and the potentiometer VR1 is turned on to realize manual voltage adjustment, which is set for the DC electrical appliance E5 with voltage adjustment, temperature adjustment and dimming. If a 24V DC electric soldering iron is connected to the invention, a 24K omega potentiometer is adopted as the potentiometer VR1, and the potentiometer is manually adjusted to change the output voltage Vo from 0V to 24V, so that the temperature is adjusted.
The voltage stabilizing value of the selected voltage stabilizer W1 is the same as the rated voltage value (only the same as the value) of the DC electric appliance E5 connected by the invention, and the voltage stabilizing value is short-circuited by jumper caps through pins 1 and 2 (or pins 2 and 4) of the double-row needle seat JP2 and is applied to the DC electric appliance E5 with fixed voltage. For example, for a mobile phone requiring 5V charging, the voltage stabilizer W1 is a 5V voltage stabilizer, and for a notebook computer requiring 19.3V, the voltage stabilizer W1 is a 19.3V voltage stabilizer. If the proper voltage stabilizer W1 is not available, the fixed resistor is used for replacement, and the resistance value and the voltage value are the same, for example, a 5.00 KΩ precision resistor is adopted for a 5V mobile phone, and a 19.30KΩ precision resistor is adopted for a 19.3V notebook computer.
The precise trimming potentiometer VR2 is a trimming resistor, has the characteristic of fine and smooth resistance value adjustment, is short-circuited through 5 pins and 7 pins of the double-row needle seat JP2, and is controlled by an external remote control signal VJ through a 2-bonding pad of the bonding pad group JP 3. The remote control signal VJ is generated by an externally connected resistor such as a resistor, potentiometer or a sense resistor (thermistor, photoresistor, etc.), and the magnitude of the remote control signal VJ is changed by adjusting the fine tuning potentiometer VR 2. The DC electric appliance E5 is suitable for temperature control, light control and remote control voltage regulation.
The precision trimming potentiometer VR3 is a trimming resistor, the resistance value of the potentiometer is adjusted to be the rated voltage value (only the same in value) of the DC electric appliance E5 connected with the trimming resistor, and the 4 pins and the 6 pins of the double-row needle seat JP2 are in short circuit, so that the trimming resistor is suitable for the DC electric appliance E5 with fixed voltage; or the 5 feet and the 6 feet of the double-row needle seat JP2 are in short circuit, the precision trimming potentiometer VR2 is connected with the precision trimming potentiometer VR3 in series, the resistance value of the precision trimming potentiometer VR2 is adjusted to be the lower limit voltage value (only the same in value) required by the DC electrical appliance E5 connected with the double-row needle seat JP2, and then the resistance value of the precision trimming potentiometer VR3 is adjusted to enable the total resistance value of the precision trimming potentiometer VR2 and the precision trimming potentiometer VR3 to be the upper limit voltage value (only the same in value) required by the DC electrical appliance E5, so that the two-stage voltage required by the DC electrical appliance E5 is realized. The method is suitable for the DC electrical appliance E5 needing voltage conversion.
According to the invention, according to the requirements of the DC electric appliance E5, not only can the output voltage Vo be changed by the universal power supply, but also the power supply mode can be changed, the design of the DC electric appliance E5 on a power supply circuit can be simplified, the application range of the universal power supply can be expanded, and the invention is suitable for more different types of DC electric appliances E5.
Several power supply modes and principles commonly used in the application of the invention:
implementation 1, common voltage regulation and voltage conversion mode:
as shown in fig. 3a, when the two groups of the pin 5 and the pin 6, and the pin 7 and the pin 8 of the double-row needle seat JP2 are respectively shorted, and the switch S1 is closed, as shown in the equivalent fig. 3B, the precision trimming potentiometer VR2 is connected in series with the precision trimming potentiometer VR3, the collector and the emitter of the triode Q1 are connected with the two ends of the precision trimming potentiometer VR3, and the point B is the midpoint of the two potentiometers. When the remote control signal VJ is not available or is at a low level, the triode Q1 is turned off, and the constant current Iv passes through the precision trimming potentiometer VR2 and the precision trimming potentiometer VR3 which are connected in series, so that the obtained voltage vr=v2+v3 is the upper limit voltage; when the remote control signal VJ (set for the DC electrical appliance E5 requiring voltage conversion, such as a standby signal, a charging voltage conversion signal, etc.) is at a high level, the bias resistor R3 and the resistor R4 divide the voltage to provide the bias current to the base of the transistor Q1 to make the transistor Q1 saturated and conductive, the two ends of the precision trimming potentiometer VR3 are short-circuited, the voltage at point B is "0" V (the saturated voltage drop of the transistor Q1 is negligible), so that the voltage vr=v2 is a lower limit voltage; when the remote control signal VJ drives the transistor Q1 in the amplifying section, the voltage Vr may vary between the upper limit voltage (v2+v3) and the lower limit voltage (V2), and if the remote control signal VJ increases, the voltage Vr decreases, which of course also results in the output voltage Vo decreasing; whereas the output voltage Vo increases. The output voltage Vo can only change between the upper limit and the lower limit of the set voltage Vr, so that voltage conversion and voltage adjustment of the universal power supply in the voltage window are realized.
For example: with electricityThe standby voltage of the 12VDC electric appliance E5 with the voltage converting function is 5V. The pure resistor is a linear element, and according to ohm's law, (shown in figure 3 b) when the constant current Iv output by the universal power supply is 1mA, VR2=V2/Iv=5V/1mA=5K Ωat this time, the resistance value of the precise trimming potentiometer VR2 is adjusted to be 5KΩ (note: under the premise that the voltage unit is "V" and the resistance unit is "KΩ", the voltage values are equal to the resistance values, i.e. are all equal to "5"), and the basis for determining the resistance value is found for establishing the lower limit voltage (V2) to be 5V; VR3=V3/Iv=(12V-5V)/1mA=7KΩ，therefore, the resistance of the fine tuning potentiometer VR3 is adjusted to 7kΩ, and the upper limit voltage (v2+v3) is set to 5v+7v=12v. The output voltage Vo, which ultimately controls the output of the universal power supply, is switched between 5V and 12V.
From the above example, it follows that: the universal power supply provides a precise 1mA constant current Iv, the resistor with the same value as the voltage value required by the DC electric appliance E5 is arranged through the resistor with the same value as the voltage value required by the DC electric appliance E5 to obtain the voltage Vr with the same value, the quasi-voltage VG is provided for the universal power supply in turn, the output voltage Vo with the same value is controlled to be output by the universal power supply, the same effect of the universal power supply controlled by the DC electric appliance and the application thereof in the patent of the universal power supply is achieved, and the universal power supply can be fully used. Therefore, the same value relation between the resistance value and the voltage value is realized, the rated voltage value of the DC electrical appliance E5 is conveniently utilized to determine the resistance value of the invention, the efficiency is high, the accuracy is high, the complicated voltage debugging is avoided, the configuration is very convenient, and the invention is convenient to link with the voltage signals of various DC electrical appliances E5.
Implementation 2, common manual voltage regulation and external control voltage regulation modes:
the DC electric iron with the output end connected to the load LR is a heating wire, and the resistor Rt is a thermistor, as shown in fig. 4. The 1 foot and the 3 foot of the double-row needle seat JP2 are short-circuited, and the temperature of the DC electric soldering iron can be directly regulated by utilizing the potentiometer VR 1; when the DC electric soldering iron is required to be constant in temperature, the 5 pins and the 7 pins of the double-row needle seat JP2 are short-circuited, the precise trimming potentiometer VR2 and the thermistor Rt are connected in series in a circuit, the precise trimming potentiometer VR2 is used for sensitivity adjustment, if the temperature rises, the resistance value of the thermistor Rt becomes small, so that the output voltage Vo of the universal power supply is controlled to fall, otherwise, the output voltage Vo is raised, and the constant temperature function is realized; when the temperature of the DC electric soldering iron is overhigh (the output voltage Vo is overvoltage), namely the resistance value of the potentiometer VR1 is overlarge, at the moment, the 4 pins and the 6 pins of the double-row needle seat JP2 are required to be short-circuited, the precise trimming potentiometer VR3 is connected with the potentiometer VR1 in parallel, the precise trimming potentiometer VR3 is properly regulated, and the resistance value of the potentiometer VR1 is pulled down in an auxiliary manner, so that the output voltage Vo is reduced, the temperature of the DC electric soldering iron is limited to be overhigh, the service life of the electric soldering iron is prolonged, and the welded components are prevented from being damaged due to overhigh temperature.
The assembly requirements of the invention are as follows: taking the above DC electric iron as an example, the wire of the existing DC electric iron (including the conventional table electric iron) is cut off from the middle, the wire sheath (10) is peeled off for use (see fig. 1), the inner surface is peeled off to expose four copper wire heads, the resistance values of two wires therein are measured to be significantly changed when heating, the two wires are respectively welded on the 2 pad and the 3 pad of the bonding pad group JP3, (see fig. 4), and the other two wires are respectively welded on the 1 pad and the 3 pad of the bonding pad group JP3 (if the DC electric appliance E5 with the positive electrode and the negative electrode is connected with the 1 pad of the bonding pad group JP3, and the negative electrode is connected with the 3 pad of the JP 3).
Referring to fig. 1, a circuit board 12 of the electronic component soldered according to fig. 2 is placed in a lower housing 16, a peeled wire sheath 10 is plugged into a wire sheath cavity 9, then a hot melt adhesive is dropped (fixing function is performed to prevent the wire from being pulled out), a mode and a resistance value are set according to the requirement of a connected DC electrical appliance E5, after the setting is completed, the upper housing 3 is covered, and after the assembly is completed, the universal power supply can be used with the DC electrical appliance E5.
When the key 5 of the switch S1 is pressed and the switch S1 is turned on, the present invention starts to operate, and when the light emitting diode DS1 is turned on, it means that the general power supply supplies power to the DC electrical appliance E5. And then the key 5 of the switch S1 is pressed, the switch S1 is disconnected (or the circuit is in poor contact), the universal power supply stops supplying power, and no voltage Vo is output.
According to the principle, the invention can form multiple modes, namely, can be applied to different types of DC electric appliances E5, and can also add new functions to the DC electric appliances E5. In summary: the DC electric appliance E5 needs fixed voltage, and the voltage stabilizer W1 is started to participate; if the voltage stabilizer W1 is not suitable, the fixed resistor can be replaced, if the voltage stabilizer W1 is inconvenient, the precise trimming potentiometer VR3 is started, and the precise trimming can reach the requirement; starting a potentiometer VR1 to be manually regulated, starting a precise trimming potentiometer VR3 to be connected in parallel if the resistance of the potentiometer VR1 is overlarge, and assisting the potentiometer VR1 to reduce the resistance; the voltage conversion is needed, precise trimming potentiometers VR2 and VR3 are started, the resistance values of the two potentiometers are regulated to bear the voltages of all stages, and simultaneously, a triode Q1 and bias resistors R3 and R4 are started to receive external control; the precision trimming potentiometer VR2 is started to receive external control, wherein the external control voltage is required to be controlled by external resistance or external sensing element. The activation of the relevant electronic components by the jumper wire of the double-row needle holder JP2 according to the demand of the DC electrical appliance E5 is sufficient to cope with various kinds of DC electrical appliances E5.
The mode and the set resistance value set by the invention can only be used for the DC electric appliances E5 of the same model, and if the DC electric appliances E5 of another model or the DC electric appliances E5 of other types are changed, the mode and the set resistance value are required to be reset, so that the invention can set voltage for the DC electric appliances E5 of different types and control any general power supply to output corresponding output voltage Vo.
It should be understood that parts of the present specification not specifically described are prior art. The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (10)
1. The utility model provides a general power connector of control voltage, its characterized in that includes the casing, be equipped with circuit board (12) in the casing, accurate fine setting potentiometre VR2 (6), accurate fine setting potentiometre VR3 (7), potentiometre VR1 (15), switch S1 (4), double needle file JP2 (13), jumper cap (14), switch S1 (4) connect switch button (5), potentiometre VR1 (15) connect potentiometre VR1 knob (8), input wire (11) that link to each other with plug P1 (2) and output wire (17) that link to each other with connecting DC electrical apparatus E5 are connected to circuit board (12); the circuit board (12) comprises a bonding pad group JP1, a pin a of the plug P1 is connected with a 1 bonding pad of the bonding pad group JP1, the 1 bonding pad of the bonding pad group JP1 is connected with a light emitting diode DS1 and a 1 bonding pad of the bonding pad group JP3, the 1 bonding pad of the bonding pad group JP3 is connected with a load LR of a DC electric appliance E5, and the light emitting diode DS1 is connected with a resistor R1; the pin b of the plug P1 is connected with the 2 pads of the pad group JP1, the 2 pads of the pad group JP1 are connected with the switch S1, the switch S1 is connected with the pin 1 of the double-row needle seat JP2, the pin 4 of the double-row needle seat JP2 and the precision trimming potentiometer VR2, and the precision trimming potentiometer VR2 is connected with the pin 5 of the double-row needle seat JP 2; the 3 feet of the double-row needle seat JP2 are connected with the potentiometer VR1, the 2 feet of the double-row needle seat JP2 are connected with the voltage stabilizer W1, and the 6 feet of the double-row needle seat JP2 are connected with the precision trimming potentiometer VR3 and the collector electrode of the triode Q1; the base electrode of the triode Q1 is connected with a resistor R3 and a resistor R4, the resistor R3 is connected with 8 pins of a double-row needle seat JP2, and 7 pins of the double-row needle seat JP2 are connected with 2 pads of a pad group JP 3; the c pin of the plug P1 is connected with the 3 pad of the pad group JP1, the 3 pad of the pad group JP1 is connected with the resistor R1, the potentiometer VR1, the voltage stabilizer W1, the precision trimming potentiometer VR3, the ground GND, the emitter of the triode Q1, the resistor R4, the 3 pad of the pad group JP3, and the 3 pad of the pad group JP3 is connected with the load LR of the DC electrical appliance E5.
2. The universal power connector for controlling voltage according to claim 1, wherein the potentiometer VR1 is a manual voltage-adjusting potentiometer, the resistance of the potentiometer is the same as the rated voltage of the DC electrical appliance E5, and the manual voltage adjustment is realized by shorting the 1-pin of the double-row needle holder JP2 and the 3-pin of the double-row needle holder JP2 with a jumper cap or shorting the 3-pin of the double-row needle holder JP2 and the 4-pin of the double-row needle holder JP2 with a jumper cap, and connecting the potentiometer VR 1.
3. The universal power connector for controlling voltage according to claim 1, wherein the voltage stabilizing value of the voltage stabilizer W1 is the same as the rated voltage value of the DC electrical appliance E5, and the pin 1 of the double-row needle holder JP2 and the pin 2 of the double-row needle holder JP2 are short-circuited by a jumper cap or the pin 2 of the double-row needle holder JP2 and the pin 4 of the double-row needle holder JP2 are short-circuited by a jumper cap.
4. The universal power connector for controlling voltage according to claim 1, wherein the precision trimming potentiometer VR2 is a trimming resistor, and is short-circuited by 5 pins and 7 pins of the double-row needle holder JP2, and is controlled by an external remote control signal VJ through 2 pads of the pad group JP 3.
5. The universal power connector for controlling voltage according to claim 1, wherein the precision trimming potentiometer VR3 is a trimming resistor, and the resistor value of the trimming resistor is adjusted to be the same as the rated voltage value of the DC electrical appliance E5, so as to short-circuit the 4 pins of the double-row needle seat JP2 with the 6 pins of the double-row needle seat JP 2.
6. The universal power connector for controlling voltage according to claim 1, wherein the precision trimming potentiometer VR3 is a trimming resistor, the 5 pins of the double-row needle holder JP2 and the 6 pins of the double-row needle holder JP2 are short-circuited, the precision trimming potentiometer VR2 is connected in series with the precision trimming potentiometer VR3, the resistance value of the precision trimming potentiometer VR2 is adjusted to be the same as the lower limit voltage value required by the DC electrical appliance E5, and the resistance value of the precision trimming potentiometer VR3 is adjusted to be the same as the upper limit voltage value required by the DC electrical appliance E5.
7. The universal power connector for controlling voltage according to claim 1, wherein the 5 pins of the double-row needle seat JP2 are in short connection with the 6 pins of the double-row needle seat JP2, the 7 pins of the double-row needle seat JP2 are in short connection with the 8 pins of the double-row needle seat JP2, the precision trimming potentiometer VR2 is connected with the precision trimming potentiometer VR3 in series, and the collector and the emitter of the triode Q1 are connected with two ends of the precision trimming potentiometer VR 3.
8. The universal power connector for controlling voltage according to claim 1, wherein 1 pin of the double-row needle seat JP2 is in short connection with 3 pins of the double-row needle seat JP2, 5 pins of the double-row needle seat JP2 is in short connection with 7 pins of the double-row needle seat JP2, and 4 pins of the double-row needle seat JP2 is in short connection with 6 pins of the double-row needle seat JP 2.
9. The universal power connector for controlling voltage according to claim 1, wherein the housing is formed by connecting an upper housing (3) and a lower housing (16).
10. The universal power connector for controlling voltage according to claim 1, wherein the casing is provided with a wire sheath cavity (9), and the wire sheath (10) is arranged in the wire sheath cavity (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553342.9A CN110109499B (en) | 2019-06-25 | 2019-06-25 | Universal power connector for controlling voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553342.9A CN110109499B (en) | 2019-06-25 | 2019-06-25 | Universal power connector for controlling voltage |
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| CN110109499A CN110109499A (en) | 2019-08-09 |
| CN110109499B true CN110109499B (en) | 2024-01-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201623643U (en) * | 2010-01-19 | 2010-11-03 | 广东斯泰克电子科技有限公司 | Power adapter with self-induction and adjustment for output voltage |
| CN106160510A (en) * | 2016-08-16 | 2016-11-23 | 杨大鸣 | A kind of multiple power source being controlled by DC electrical appliance and application thereof |
| CN207020567U (en) * | 2017-07-12 | 2018-02-16 | 深圳市龙星辰电源有限公司 | A kind of power supply with setting output voltage |
| CN109474170A (en) * | 2018-10-31 | 2019-03-15 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | A power circuit of a submarine junction box |
| CN209859026U (en) * | 2019-06-25 | 2019-12-27 | 杨大鸣 | Universal power supply connector for controlling voltage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9413181B2 (en) * | 2010-04-23 | 2016-08-09 | The Flewelling Ford Family Trust | Wearable power supply comprising a master cell and a slave cell |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623643U (en) * | 2010-01-19 | 2010-11-03 | 广东斯泰克电子科技有限公司 | Power adapter with self-induction and adjustment for output voltage |
| CN106160510A (en) * | 2016-08-16 | 2016-11-23 | 杨大鸣 | A kind of multiple power source being controlled by DC electrical appliance and application thereof |
| CN207020567U (en) * | 2017-07-12 | 2018-02-16 | 深圳市龙星辰电源有限公司 | A kind of power supply with setting output voltage |
| CN109474170A (en) * | 2018-10-31 | 2019-03-15 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | A power circuit of a submarine junction box |
| CN209859026U (en) * | 2019-06-25 | 2019-12-27 | 杨大鸣 | Universal power supply connector for controlling voltage |
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| Publication number | Publication date |
|---|---|
| CN110109499A (en) | 2019-08-09 |
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