SU1320799A2 - High-voltage regulated power supply source - Google Patents

Abstract

The invention relates to secondary power sources of radio equipment. The aim of the invention is to increase the output power, improve the quality of the output power and improve the energy mode. When the load current changes, the frequency of the oscillator 12 changes so that all the time is equal to the natural frequency of the resonant system, ensuring the source operates in a resonant mode. When the output voltage changes, the signal from the output of the divider 7 through the comparison unit 10 is fed to the inputs of the modulators 8 and 9 and changes the duration of their output pulses. This results in the restoration of the output voltage. 1 il. -i-E about 9 00 th

Description

The invention relates to electrical engineering, namely, to sources of secondary power supply, and can be used to power high-voltage nodes and elements of electronic equipment.

The purpose of the invention is to increase the output power, reduce the ripple and increase the stability of the output power, improve the energy mode of the source.

The drawing shows a functional diagram of a high-voltage stabilized power source.

A high-voltage stabilized power source contains a high-voltage transformer 1, the primary windings 2 and 3 of which are in series with the power terminals of the transistor

Key 4 and 5, respectively, connect

to the input terminals. The secondary winding is connected to the input of a high voltage multiplier 6, the output connected to the output terminals, shunted by a feedback divider 7. Pulse width modulators 8 and 9 are connected to the controlled inputs of transistor switches 4 and 5, respectively. The control inputs of the pulse width modulators 8 and 9 are connected to the outputs of the comparator unit 10. The control unit 11 for its input is connected to the additional output of the feedback divider 7, and the output is connected to. the input of the controlled oscillator 12, the outputs of which are connected to the synchronization inputs of the pulse-width modulators 8 and 9. The input of the comparative unit 10 is connected to the output of the feedback divider 7.

A high voltage stabilized power source operates as follows.

The triggering pulses from the generator 12 are fed to the inputs of modulators 8 and 9, which produce control pulses of transistor switches 4 and 5, respectively, shifted relative to each other in time by a half-frequency of the conversion frequency, which is provided by the controlled-oscillator circuit. Since the power circuits of transistor switches 4 and 5 are included, the purpose is to increase the output power.

Since the primary windings 2 and 3, respectively, of the transformer 1, then in its secondary winding high-voltage pulses are produced, which are supplied.

improving the quality of the output power and improving the energy regime; a second pulse-width modulator was introduced into it, a second transis-

five

to a multiplier; 6 to form an output voltage supplying a divider 7 and a high-voltage source.

When the magnitude of the high-voltage current changes, the natural frequency of the high-voltage resonant power supply system and the magnitude of the output voltage change.

With a change in the output voltage, the value of the signal taken from the auxiliary output of the divider 7, which is fed to, changes. the input of the control unit 1 1, on the imprint of which the power supply voltage of the generator 12 is generated. When you change the voltage value of the power supply of the generator 12, the frequency of its pulses, which start the module 1, changes

Thus, as the current of the high voltage load changes, the frequency of the generator 12 changes as

so that all the time be equal to the natural frequency of the high-voltage resonant source system, ensuring the latter operates in the resonant mode ..

From the output of the divider 7, the feedback signal is fed to the input of the comparator unit 10, from the outputs of which it is fed to the inputs of the modulators 8 and 9. The duration of the output pulses of the modulator stages changes, which leads to a change in the value of the output voltage until the latter is not restored. Thus, the output voltage is stabilized.

The use of the proposed high-voltage stabilized power source allows an almost twofold increase in power density.

source volume and weight, significantly reduce ripple, increase the stability of the output power and improve the energy mode of the source.

Claims (1)

Invention Formula High-voltage stabilized power source According to auth.st. No. 907532, characterized in that, with improving the quality of the output power and improving the energy regime; a second pulse-width modulator was introduced into it, a second transis- 313207994 key and additional primary input of the second transistor the high-voltage transformer-key winding, the power terminals of which are in the actuator, with this pulse-width pulse between, is an additional primary the modulator with its controlled input winding of the high-voltage transformer is connected to the second output of the torus unit and the common bus, with additional comparison, the synchronization input — the primary winding is turned on the second output of the controlled generator-counter with the main primary circuit, and the output is connected with the control e-coil.