SU611296A1

SU611296A1 - Pulse shaper for control of solid-state inverter

Info

Publication number: SU611296A1
Application number: SU752146449A
Authority: SU
Inventors: Юрий Петрович Кинеев; Алексей Львович Рыбак
Original assignee: Предприятие П/Я А-1639
Priority date: 1975-06-20
Filing date: 1975-06-20
Publication date: 1978-06-15

Description

Изобретение относитс к радиотехнике и может быть использовано в системах автоматики .The invention relates to radio engineering and can be used in automation systems.

Известен формирователь импульсов дл управлени транзисторным инвертором, который формируе.т короткие импульсы чередующейс пол рности и имеет питание от переменного напр жени i 1.A pulse shaper is known for controlling a transistor inverter that generates short pulses of alternating polarity and is powered by an alternating voltage i 1.

Известный формирователь имеет большую мощность задающего генератора. The known driver has a high power master oscillator.

Наиболее близким техническим решением к данному изобретению вл етс формирователь импульсов дл управлени транзисторным инвертором, содержащий источник питани , три транзистора, конденсатор, входной трансформатор, первична обмотка которого подключена к задакмцему генератору, и выходной трансформатор, его первична обмотка включена между коллекторами первого и второго транзисторов . и зашунтирована последовательной цепочкой из двух встречно включенных диодов, причем средн точка первичной Обмотки выходного трансформатора черюз реоистор соединена с пер&ЫМ поЛюсрм источника питани , второйThe closest technical solution to this invention is a pulse shaper for controlling a transistor inverter, comprising a power source, three transistors, a capacitor, an input transformer, the primary winding of which is connected to the back of the generator, and an output transformer, its primary winding is connected between the collectors of the first and second transistors . and is shunted by a series of two oppositely connected diodes, with the middle point of the primary winding of the output transformer and the bluetooth rheistor connected to the amp & ny of the power source, the second

полюс которого соединен с эмиттером и через обмотки обратной св зи выходного трансформатора с базами первого и второго транзисторов, а конденсатор включен последовательно с вторичной обмоткой входного трансформатора между базами первого и второго транзисторов 2.whose pole is connected to the emitter and through the feedback windings of the output transformer with the bases of the first and second transistors, and the capacitor is connected in series with the secondary winding of the input transformer between the bases of the first and second transistors 2.

Однако этот формирователь сложен и .обч ладает невьюоким КПД.However, this driver is complex and the overall efficiency is low.

Цель изобретени - повышение КПД и упрощение формировател .The purpose of the invention is to increase efficiency and simplify shaper.

Дл этого в предлагаемый формирователь дл управлени транзисторным инвертором введен резистивный делитель напр жени источника питани , причем средн точка резистивного делител соединена с базой третьего , транзистора, который своим коллектором соединен со средней точкой цепочки из двух встречно включенных диодов, а эмиттером - со средней точкой первичной обмотки выходного трансформатора.To do this, a resistor voltage divider is introduced into the proposed driver for controlling the transistor inverter, the middle point of the resistive divider connected to the base of the third transistor, which is connected to the midpoint of a chain of two oppositely connected diodes and the emitter to the midpoint primary windings of the output transformer.

Claims

The drawing shows a circuit diagram of the proposed driver. A pulse shaper for controlling a transistor inverter contains a power source connected to terminals 1 and 2, three transistors 3-5, a capacitor 6, an input transformer 7, the primary winding 8 of which is connected to a master oscillator (not shown), and the output transformer 9, its the primary winding 10 is connected between the collectors of the second and second transistors 3, 4 and is shunted on a series of two oppositely connected diodes 11 and 12. The average point of the primary winding of the output transformer 9 is through a 13 s resistor Single with power supply terminal I. The power supply terminal 2 is connected to the emitters of transistors 3 and 4 and through the feedback windings 14 and 15 of the output transformer 9 to the bases of the first and second transistors 3 and 4, the capacitor 6 is connected in series with the secondary winding 16 of the input transformer 7 between the bases of the first and the second transistors 3 and 4. In addition, the driver contains a resistive voltage source divider, consisting of resistors 17 and 18, the middle point of which is connected to the base of the third transistor 5, which is connected to the collector with the collector From the point of the chain of two oppositely connected diodes 11, and 12, and the emitter - with the midpoint of the primary winding of the output transformer 9. The output pulses are removed from the output winding 19 of the start-up transformer 9. The pulse shaper FOR transistor inverter control works in a slower manner. The reaepaTqp driver supplies to the primary winding 8 of the input transformer 7 a short clock pulse, which from the secondary winding 16 through the capacitor 6 enters the bases of transistors 3 and 4, one of which opens (for example, transistor 3) and the emitter base of the other the transistor 4 is clamped down. The supply voltage is applied to the corresponding half of the winding Yu of the output transformer 9. The opening transistor 3 is kept open, and the transistor .4 is closed by the feedback voltage. On the output winding 19, a flat top of the pulse is formed, and in this case, the resistor 13 flows through the current, creating a voltage drop sufficient to keep the transistor 4 in the closed state. After some time, the transformer 9 becomes saturated. The time of its saturation determines the duration of the output pulse. The voltage across its windings becomes zero, transistor 3 closes, disconnecting the primary winding Yu from the power source. The current in the resistor 13 becomes equal to zero, the voltage across it disappears, the transistor 4 is biased through a resistive voltage divider from resistors 17 and 18. The self-induction EMF arising at the time of locking of the transistor 3 is bypassed by the open transistor 4 and the diode 12. In the next half-period, the circuit works similarly, with the only difference that the supply voltage is applied to the other cords of the winding 10 of the output transformer 9, and a pulse of a different polarity is formed, and Boznikaksha, at the end of the EMF pulse, transistor 3 and diode 11, claims The pulse shaper for controlling the transistor inverter contains a power source, three transistors, a capacitor, an input transformer, the primary winding of which is connected to the master oscillator, and an output transformer whose primary winding is connected between the first and second co-switches. o transistors and is enclosed by a series of two oppositely connected diodes, the middle point of the primary winding of the output transformer through a resistor p is connected to the first pole of the power source, the second pole of which is connected to the emitters and through the feedback windings of the output transformer to the bases of the first and second transistors, and the capacitor is connected in series with the secondary winding of the input transformer between the bases of the first and second transistors, characterized in that in order to increase efficiency and simplify the device, a resistive voltage divider of the power supply is inserted into it, with the middle point of the resistive depipe connected to the base of the third transistor, which its collector is connected to the midpoint of a chain of two

included diodes, and the emitter - with the middle point of the primary winding of the output transformer.

Sources of information taken into account in the examination:

1 | Moin B, C, Stabilized transistor converters. Energy, 1972, p. 8-15.

2. US patent No. 326092, CP. 321-45. 197Q,