ITNA950020A1 - VOLTAGE ELEVATOR DEVICE, SPECIALLY SUITABLE FOR IGNITION OF INERT GAS TUBES, OR ANY USER, WITH - Google Patents

Description

Patent for industrial invention

Summary of the description

Voltage booster device, consisting of capacitors of appropriate capacity, and diodes, connected in a bipolar and symmetrical way, suitable for obtaining another direct voltage, with relative alternating component and having the ability to self-eliminate the high voltage necessary for the ignition of the inert gas pipes and self-adjusting the maintenance one within the operating values resulting in energy savings.

Title

Voltage booster device, especially indicated for the ignition of inert gas pipes, or any user, with voltages necessary for maintenance, and the disappearance of the higher ones, after ignition.

Description

At present, in order to light up the so-called neon tubes, for decoration or luminous signs by the meter, two types of power supplies are used, which are heavy, bulky, expensive, and dangerous, for reasons mentioned above and for their intrinsic characteristic. The first of the two types is the traditional one, a transformer with a high number of secondary turns. This entails problems of weight (increased above all by the lamellae core), and of insulation given by the enormous quantity of turns in the secondary. The second more modern type is made up of a set of elements that raise the network frequency from 50hz to about 28 khz. This involves special precautions and connections, radio frequency disturbances, induction and insulation problems with little reduction in volume and weight The object of the present invention eliminates all these drawbacks, making the alternating current, mains current, direct current, this reduces the risks for the stiffness constant of the dielectric, which as we know is approximately equal to 1/3 with respect to alternating current. Therefore, the aforesaid device overcomes the problem of insulation, that of weight, bulk, and high cost, since all the above parameters are also reduced to approximately 1/3. The solution idea of the present invention consists in suitably mounting a plurality of diodes, capacitors and resistors so as to obtain voltage multipliers. The connection characteristic of said multipliers as per table 1 fig. 1 is symmetrical and bipolar, this solution is an essential characteristic of the circuit in question. The term bipolar. it refers to the particular structure of the circuit, which is presented in its essence, effectively in a bipolar way. First of all, the symmetry of network A with respect to network B is necessary, symmetry and identicality for quantity and values of the circuit elements (diodes, capacitors, resistors), the only difference is in the polarity, to which bipolarity refers, which is given by the sense orientation of the diodes (9), opposite to the diodes (19). Therefore part A will develop a voltage of equal and opposite value to part B, and between the points x and y of output of the two circuits there will be the sum of the voltage developed by them. This bipolar arrangement has the ability to eliminate the inevitable straboscopic effect given by the capacitors (which in any case resulting in series short-circuited, in one sense only by the diodes) which would release the half-wave as a disturbance of the alternating component. The symmetry of the circuit allows the passage of the two half waves, as an alternating component, in a balanced way, eliminating the flickering of light in the tubes. In the example of pl. 1 fig. 1 the circuit supplies about 2000 positive volts in section A, and 2000 negative volts in section B, with a 220 volt supply in input (20). The overall voltage between points (x) and (y) is therefore approximately 4000 volts direct current in no-load condition. A 3 meter long argon tube (22) triggers at this value, and in operation establishes 1800 volts at its cathodes; voltage maintained by the respective capacitors (1), (2), (3), and (11), (12), (13).

The small capacitors (4, 5, 6, 7, 8,) and (14, 15, 16, 17, -18) will lose their charge being in series until they have zero to a few volts on the last (8) and (18) This characteristic will result in a voltage drop of a few volts across the resistor (21). The resistors (10) discharge the capacitors in case of disconnection of the circuit, without the load. The representation of the circuit is purely indicative, because the lengths of the tubes are variable, therefore the sizing of the stages depends on the market demand. The system realized in modules is presented for parallel series connections in order to reach all possible voltage and current values.

Claims (4)

Claims 1) Modular capacitive transformer for gas pipes, or any user with voltages necessary for maintenance, with the disappearance of the high ones after ignition. 2) Device as in the first claim consisting of N diodes, N capacitors, N resistance, since the number N of the stages is not binding. 3) Device like the first and second claims where, the value of the capacitances, diodes, resistors, of the input and output voltages are not binding. 4) Device as in the preceding claims conceived in modules that can be connected together, with the characteristic of being able to reach all possible voltages and currents. All as previously described and with reference to the attached graph.