CN108572685A - Digital display adjustable DC regulated power supply - Google Patents

Abstract

The invention discloses a kind of adjustable D.C. regulated power supplies of digital display, it is proposed that a kind of to may be implemented that output voltage values are adjustable and the D.C. regulated power supply of real-time display.The present invention includes direct current regulation circuit and digital display circuit two parts, and wherein direct current regulation circuit includes transformer circuit, rectification circuit, filter circuit, amplitude setting circuit and regulator circuit；Digital display circuit is made of ICL7107 integrated circuits and common-anode charactron.Circuit of the present invention is simple, easy to operation, it is easy to accomplish, it is at low cost, it is suitble in experimental debugging to the not high occasion of DC voltage smoothness requirements.

Description

Digital display adjustable DC regulated power supply

technical field

The invention relates to a DC stabilized voltage power supply, in particular to a digital display adjustable DC stabilized voltage power supply.

Background technique

As a power supply device often used in laboratories, DC stabilized power supply can easily convert AC power into DC power of appropriate size for use by electrical equipment. For different electrical equipment, the amplitude is not the same. In order to realize the conversion of alternating current into direct current, the requirements of low cost and high reliability, and to meet the power supply requirements of different sizes and stable direct current in the experiment, the present invention has carried out the design of a direct current stabilized power supply with adjustable output and real-time display amplitude .

Contents of the invention

In order to solve the above-mentioned background needs, the present invention is solved through the following technical solutions:

A digital display adjustable DC stabilized power supply is characterized in that the digital display adjustable DC stabilized power supply includes two parts: a DC stabilized voltage circuit and a digital display circuit, wherein the DC stabilized voltage circuit includes an AC interface circuit, a transformer circuit, a rectifier circuit, filter circuit, amplitude setting circuit and voltage stabilization circuit; the AC interface circuit is electrically connected to the transformer circuit; the transformer circuit is electrically connected to the rectifier circuit; the rectifier circuit is electrically connected to the filter circuit; the filter circuit is electrically connected to the filter circuit The voltage stabilizing circuit is electrically connected; the voltage stabilizing circuit is electrically connected to the amplitude setting circuit; the digital display circuit includes an ICL7107 integrated circuit and an LED digital tube display circuit; the voltage stabilizing circuit is electrically connected to the ICL7107 integrated circuit; the ICL7107 The integrated circuit is electrically connected with the LED digital tube display circuit.

Preferably, the rectification circuit adopts a full-wave rectification circuit.

The DC stabilized power supply can obtain a stable DC power supply that meets the requirements by setting the amplitude according to the power consumption of the load, and the digital display circuit displays the output amplitude of the DC stabilized power supply in real time.

Due to the adoption of the above technical solutions, the present invention has remarkable technical effects: the circuit structure is simple, the cost is low, and the operation is easy.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a composition block diagram of the digital display adjustable DC regulated power supply of the present invention;

Fig. 2 is the principle diagram of Embodiment 1 of the digital display adjustable DC stabilized voltage power supply of the present invention;

Fig. 3 is a pin diagram of the digital display adjustable DC stabilized power supply ICL7107 of the present invention;

Fig. 4 is a DC voltage stabilizing circuit diagram of Embodiment 1 of the digital display adjustable DC voltage stabilizing power supply of the present invention

Figure 5 is a digital display circuit diagram of Embodiment 1 of the digital display adjustable DC stabilized voltage power supply of the present invention

Detailed ways

The present invention will be further described in detail below in conjunction with the examples, the following examples are explanations of the present invention and the present invention is not limited to the following examples.

Example 1:

Figures 1 to 5 illustrate the block diagram and principle schematic diagram of a digital display adjustable DC stabilized power supply. In Figure 1, the load is connected to the circuit and electrically connected to the stabilized voltage circuit. Figure 3 shows the ICL7107 pin diagram, 20 pins can realize positive and negative power supply display. In the work, according to the actual load power demand, select the transformer and voltage stabilizing circuit with appropriate parameters. The mains power is connected to the DC voltage stabilizing power supply transformer circuit terminal through the AC interface circuit, which is the rectification circuit, filter circuit, amplitude setting circuit, and digital display circuit. and voltage regulator circuit power supply. The digital display circuit uses a single-chip A/D conversion integrated circuit (ICL7107), among which ICL7107 is a three-and-a-half-digit double-integral A/D converter, and its maximum display value range is ±1999, and it adopts a dual-in-line package. The standard working voltage is +5V, -5V. After the chip automatically performs a series of numerical conversions, it directly drives the common anode LED digital display tube and displays it on the LED in BCD code mode. The minimum resolution is 100uV. When working, after the AC power is processed by this stabilized power supply, the AC power can be converted into a stable DC power. By adjusting the potentiometer, a DC power with a suitable size for the load can be obtained. At the same time, the digital display circuit displays the current output value in real time. It is convenient for the operator to adjust. Here, according to Figure 1, the voltage stabilizing circuit is composed of a three-terminal voltage stabilizing power supply, as shown in Figure 4 and Figure 5, through the amplitude setting circuit, when the output value of the voltage stabilizing power supply is set to 24.6V, compared with the measured value of the voltmeter, it can be seen The value displayed by the LED digital tube in the digital display circuit is exactly 24.6V. In practical applications, the rectifier circuit, filter circuit, voltage regulator circuit and display circuit can be changed according to the load requirements to realize the digital display DC stabilized power supply with different parameter requirements.

In addition, it should be noted that the specific embodiments described in this specification may be different in terms of parts, shapes and names of components. All equivalent or simple changes made according to the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims. All should belong to the protection scope of the present invention.

Claims (1)

1. a kind of adjustable D.C. regulated power supply of digital display, which is characterized in that the adjustable D.C. regulated power supply of the digital display includes direct current Regulator circuit and digital display circuit two parts, wherein direct current regulation circuit include alternating current interface circuit, transformer circuit, whole Current circuit, filter circuit, amplitude setting circuit and regulator circuit；The alternating current interface circuit electrically connects with transformer circuit It connects；The transformer circuit is electrically connected with rectification circuit；The rectification circuit is electrically connected with filter circuit；The filtered electrical Road is electrically connected with regulator circuit；The regulator circuit is connect with amplitude setting circuit electrical；The digital display circuit includes ICL7107 integrated circuits and LED charactrons display circuit；The regulator circuit is electrically connected with ICL7107 integrated circuits；It is described ICL7107 integrated circuits are electrically connected with LED charactrons display circuit.