SU1282306A1

SU1282306A1 - Phase-sensitive amplifier-modulator

Info

Publication number: SU1282306A1
Application number: SU853940157A
Authority: SU
Inventors: Вадим Васильевич ОМЕЛЬЧЕНКО; Виктор Владимирович Путников; Евгений Александрович Петров; Владимир Борисович Уваров; Глеб Борисович Михайлов
Original assignee: Военный Инженерный Краснознаменный Институт Им.А.Ф.Можайского
Priority date: 1985-07-29
Filing date: 1985-07-29
Publication date: 1987-01-07

Abstract

Изобретение относитс к области автоматики и может быть использовано в первичных преобразовател х сигналов переменного тока в. посто нный. С целью повьшзени тока в нагрузке в фазочувствительный усилитель-демодул тор , содержащий первый и второй трансформаторы, выводы первичной обмотки первого трансформатора вл ютс входами Аазочувствительного усилител -демодул тора, а первичные обмотки второго соединены с источниками опорного сигнала, первьй резистор , первый транзистор, первый и второй диоды, введены второй резистор и второй транзистор. При совпадении фаз входного и опорного сигналов один из транзисторов открываетс , и ток второго трансформатора протекает в одном из полупериодог через открытый транзистор, другую вторичную обмотку первого трансформатора , второй диод в нагрузку. При инвертировании фазы входного сигнала открьюаетс другой транзистор, и ток в нагрузку протекает через первый диод в другом направлении. Лио- ды создают путь дл тока в нагрузку , мину инверсно включенный транзистор , что уменьшает количество р-п-переходов дл тока нагрузки. В результате ток в нагрузке увеличиваетс при тех же значени х входного и опорного сигналов. 1 ил. с W IS3 00 N) 00The invention relates to the field of automation and can be used in primary transducers of AC signals. constant. In order to increase the current in the load, the phase-sensitive amplifier-demodulator containing the first and second transformers, the terminals of the primary winding of the first transformer are the inputs of the Aa-sensitive amplifier-demodulator, and the primary windings of the second are connected to sources of the reference signal, the first resistor, the first transistor, the first and the second diodes, the second resistor and the second transistor are introduced. When the phases of the input and reference signals coincide, one of the transistors opens, and the current of the second transformer flows in one half-period through the open transistor, the other secondary winding of the first transformer, the second diode into the load. When the input signal phase is inverted, another transistor opens, and the current flows to the load through the first diode in the other direction. Lyodes create a path for the current to the load, a minute of the inversely-connected transistor, which reduces the number of pn-junctions for the load current. As a result, the current in the load increases with the same values of the input and reference signals. 1 il. from W IS3 00 N) 00

Description

Изобретение относитс к автоматике и может быть использовано в первичных преобразовател х сигналов переменного тока в посто нный.The invention relates to automation and can be used in primary converters of signals of alternating current into constant.

Целью изобретени вл етс повышение нагрузочной способности фазо- чувствительного усилител -демодул тора .The aim of the invention is to increase the load capacity of a phase-sensitive amplifier-demodulator.

На чертеже представлена схема фа- зочувствительного усилител -демодул тора .The drawing shows a diagram of a phase-sensitive amplifier-demodulator.

Фазочувствительный усилитель-демодул тор содержит первый трансфор- матор 1, .выводы 2 первичной обмотки которого вл ютс входами фазочувст1вительного усилител -демодул тора, первьй 3 и второй 4 резисторы, первый 5 и второй 6 транзисторы, первый 7 и второй 8 диоды, второй трансформатор 9, первична обмотка которого соединена с источником 10 опорного сигнала, нагрузку 11.The phase-sensitive demodulator amplifier contains the first transformer 1, the primary winding terminals 2 of which are the inputs of the phase-sensitive amplifier-demodulator, first 3 and second 4 resistors, first 5 and second 6 transistors, first 7 and second 8 diodes, second transformer 9, the primary winding of which is connected to the source 10 of the reference signal, the load 11.

Нагрузка 11 состоит из конденса1282306 2Load 11 consists of condensation 1282306 2

входного и опорного сигналов, коэффициент передачи фазочувствительного усилител -демодул тора также увеличиваетс .the input and reference signals, the transmission coefficient of the phase-sensitive amplifier-demodulator also increases.

5five

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Claims

Invention Formula

A phase-sensitive amplifier-demodulator containing the first transformer, the primary winding pins of which are the inputs of the phase-sensitive amplifier-demodulator, at the beginning and end of one secondary winding are connected respectively to one output of the first resistor and the emitter of the first transistor, the first and second diodes , the second transformer, the primary winding of which is connected to the source of the reference signal, one output of the secondary winding of the second transformer is connected to the output of the first diode, the other in Secondary output of the second

torus 12 and resistor 13 connected 25 of the transformer is the first output of the phase-sensitive demodulator and is connected to one load input, the output of the second diode is the second output of the phase-sensitive amplifier demodulator and connected to another load input, characterized in that the purpose of increasing the load capacity, the second transistor and the second resistor, the emitter

to the counter-connected base-emitter transitions of transistors 14 and 15, shunted by diodes 16 and 17.

Phase-sensitive amplifier-demodulator works as follows.

When the phases of the input and reference signals coincide, one of the transistors 5 (6) opens, and the current of the transformer 9 in one of the half-periods flows through the open transistor 5, the other secondary winding of the transformer 1 and the diode 8 into the load 1 1. By inverting the phase of the input signal, another transistor 5 (6) opens and the current to the load 11 flows through the diode 7 in the other direction. Diodes 7 or 8 create a path for the current to the load, the reverse transistor is turned on by the mine, which reduces the number of transitions for the load current 11.

As a result, the current in load 11 increases with the same values

the transformer is the first output

the house of a phase-sensitive demodulator amplifier and connected to one load input, the output of the second diode is the second output of the phase-sensitive amplifier demodulator and connected to another load input, characterized in that, in order to increase the load capacity, a second transistor and a second emitter resistor

The second transistor is connected to the emitter of the first transistor and the beginning of the other secondary winding of the first transformer, the end of which is connected to the common point of the first and second diodes, one terminal of the second resistor is connected to one terminal of the first, and other terminals of the first and second resistors are connected to the bases of the first and second, respectively transistors, the collectors of which are connected to the conclusions of the first and second diodes, respectively. Dov.