SU1661943A1

SU1661943A1 - Voltage converter

Info

Publication number: SU1661943A1
Application number: SU894663875A
Authority: SU
Inventors: Леонид Николаевич Зайцев
Original assignee: Предприятие П/Я В-2445
Priority date: 1989-03-21
Filing date: 1989-03-21
Publication date: 1991-07-07

Abstract

Изобретение относитс к области электротехники и может быть использовано в качестве импульсных источников питани . Цель изобретени - увеличение быстродействи и КПД. Устройство обеспечивает задержку импульсов синхронизации, поступающих на включение импульсной нагрузки 12 до момента достижени установленного напр жени на накопительном конденсаторе 11. При этом исключаютс импульсы, не достигшие номинальной мощности, а также затраты времени на подзар д накопительного конденсатора 11 при каждом разр де его этими импульсами. Периодическое шунтирование выхода выпр мител 3 обеспечивает стабильность напр жени на нагрузке 12, величина которого регулируетс изменением порога срабатывани порогового элемента 10. 2 ил.The invention relates to the field of electrical engineering and can be used as a switching power supply. The purpose of the invention is to increase speed and efficiency. The device provides a delay of synchronization pulses arriving at switching on the pulse load 12 until the set voltage is reached at the storage capacitor 11. This excludes pulses that have not reached the rated power, as well as the time spent on charging the storage capacitor 11 at each discharge with these pulses . Periodic shunting of the output of the rectifier 3 ensures the stability of the voltage on the load 12, the magnitude of which is regulated by changing the threshold of the threshold element 10. 2 Il.

Description

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Claims

Formula of the invention An AC-to-DC converter containing input terminals for connecting an AC voltage source, a bridge diode rectifier, the input of which is connected to the input terminals through an inductive-capacitive circuit, and the output through a storage capacitor - with terminals for connecting a controlled pulsed load, and a thyristor, the control electrode of which is connected to the first output of the threshold element, one input of which is connected to the positive terminal of the storage capacitor, characterized in that, in order to increase speed and efficiency, the inductive capacitive circuit is made in the form of a four-terminal reactive, bridge rectifier is made. six-arm and two thyristors are additionally introduced, the control electrodes of which are connected respectively to the second and third outputs of the threshold element, the other input of which forms an output for connecting the input of the synchronization unit, a delay unit including an RS-trigger and an AND-NOT logic element, as well as a voltage reference source moreover, the output of the RS-trigger is connected to the first of the inputs of the AND-NOT element, the second input of which is connected to another input of the threshold element, and the output to the control circuit of the pulse load, the fourth output is sometimes of the first element is connected to the C-output of the RS-flip-flop, the other inputs of which are connected to the positive output of the reference voltage source, each of these thyristors being connected counter-parallel to one of the corresponding diodes of the cathode group of the bridge rectifier.

---- _ Trajectory of stress of prototype elements

------ The voltage path of the inventive figure 2.