SU924718A1

SU924718A1 - Relay amplifier

Info

Publication number: SU924718A1
Application number: SU802942782A
Authority: SU
Inventors: Алексей Григорьевич Костылев; Василий Геннадьевич Попов; Олег Иванович Осипов; Леонид Игнатьевич Цытович
Original assignee: Челябинский Политехнический Институт Им.Ленинского Комсомола
Priority date: 1980-06-11
Filing date: 1980-06-11
Publication date: 1982-04-30

Description

Изобретение относитс к усилительным устройствам с широтно-импульсным преобразователем сигналов и может быть использовано в аналоговых вычислительных машинах.. .The invention relates to amplifying devices with a pulse-width signal transducer and can be used in analog computers.

. Один из известных релейных усилителей содержит операционный усилитель/ трансформатор, масштабнЫе резисторы 1.. One of the known relay amplifiers contains an operational amplifier / transformer, large resistors 1.

Данное устройство характеризуетс низкой помехоустойчивостью.This device is characterized by low noise immunity.

Наиболее близким к предлагаемому вл етс релейный усилитель, содержащий операционный усилитель, первый и второй трансформаторы, фильтр, разр дный и масштабный резисторы 2.Closest to the present invention is a relay amplifier containing an operational amplifier, a first and a second transformer, a filter, and a discharge and scale resistors 2.

Недостатком известного релейного усилител вл етс сравнительно мала помехоустойчивость.A disadvantage of the known relay amplifier is the relatively low noise immunity.

Цель изобретени - повышение помехоустойчивости .The purpose of the invention is to improve noise immunity.

этсазанна цель достигаетс тем, , что релейный усилитель, содержаЦий операционный усилитель, первый и второй трансформатоги, фильтр, разр дный и масштабный резисторы, выводы первичной обмотки первого трансформатора соединейы с соответствующими выводами первичной обмотки второго трансформатора и вл ютс входом релейного усилител , первый вывод основной вторичной обмотки первого трансформатора через разр дный резистор соединен с шиной нулевого потенциала, а через первый масштабный резистор соединен с инвертирующим входом операционного усилител , между неинвертирующим входом и выходом которого подключен второй мас10 штабный резистор,- выход операционного- усилител вл етс выходом релейного усилител и соединен с вторым выводом основной вторичной обмотки первого трансформатора, вход This goal is achieved by the fact that the relay amplifier containing the operational amplifier, the first and second transformers, the filter, the discharge and scale resistors, the primary terminals of the first transformer of the connector with the corresponding primary terminals of the second transformer, are the input of the primary amplifier the secondary winding of the first transformer through the discharge resistor is connected to the zero potential bus, and through the first large-scale resistor is connected to the inverting input of the opera insulating amplifier, between the inverting input and the output of which is connected a second resistor mas10-scale, - the output of the amplifier operatsionnogo- is output relay amplifier and a second terminal coupled to the main secondary winding of the first transformer input

15 фильтра подключен к первому выводу вторичной обмотки второго трансформатора , второй вывод вторичной обмотки которого соединен с шиной нулевого потенциала, введены пороговый 15 of the filter is connected to the first output of the secondary winding of the second transformer, the second output of the secondary winding of which is connected to the zero potential bus, a threshold is entered

Claims

The 20th element, key, current limiting resistor and additional secondary winding of the first transformer are connected to its main secondary winding, the first output of the additional secondary secondary winding of the first transformer is connected to the first output of the current limiting resistor, the second output of which is connected to the second output 3 & an additional secondary winding of the first transformer and to the zero potential bus, the VELKHOD filter is connected through a threshold element to the control input of the key. The drawing shows the functional scheme of the proposed relay amplifier. The device contains the first transformer 1, the primary winding 2 of the first transformer 1, the operational amplifier 3, the discharge resistor 4, the first and second scale resistors 5 and 6, the secondary winding 7 of the first transformer 1, the second transformer 8, primary. The winding 9 and 10 of the second transformer 8 is filterful, the filter 11, the threshold element 12, the additional secondary winding 13 of the first transformer 1 is 14, the current-limiting resistor 15 is bus 16 of zero potential, input 17 and output 18 of the relay amplifier. The relay amplifier works the next way. The signal at the output of the operational amplifier 3 takes one of the maximum values corresponding to its saturation. Under the influence of the output signal of the operational amplifier 3, the first transformer 1 is saturated and a current pulse appears in its main secondary winding 7, but this creates a voltage drop on the discharge resistor 4 sufficient to switch the operational amplifier 3 to the opposite state. the signal from operational amplifier 3 begins the process of reversal of the first transformer 1, which lasts until the operational amplifier 3 is switched again. In the absence of an input signal, the average value of the pulses at the output 18 during the period of self-oscillations is zero. If there is an input signal, the duration of the magnetization reversal of the first transformer 1 in one of the half-periods of self-oscillations is determined by the sum of the currents in the primary 2 and secondary 7 windings, and in the other half-period - by the difference of the currents. If there is interference at the input 17 of the relay amplifier in the secondary winding 10 of the second transformer 8, a voltage is detected, which after fItration causes the threshold element 12 to operate. Key 14 closes and additional secondary winding 13 closes at the current limiting resistor 15. As a result, under the influence of an interfering signal Additional secondary winding 13 carries a current, the magnetizing force of which is directed opposite to the magnetizing power of the interference signal. In this way, compensation of the cystine-interfering signal occurs. Compared with the us-prototype prototype, the proposed relay amplifier has a higher noise immunity. A relay amplifier containing an operational amplifier, first and second transformers, a discharge filter and large-scale resistors, the primary windings of the first transformer are connected to the corresponding primary windings of the second transformer and are the input of the relay amplifier, the first offset of the main secondary winding of the first transformer the discharge resistor is connected to the zero potential line, and through the first large-scale resistor it is connected to the inverting input of the operating force the body, between the non-inverting input and the output of which the second scale resistor is connected, the output of the operational amplifier is the output of the relay force of the body and is connected to the second output of the main second parallel winding of the first transformer, the filter input is connected to the first output of the secondary winding of the second transformer, the second output of the secondary winding of which is connected with a zero potential bus, characterized in that, in order to improve noise immunity, a threshold key, a current limiting resistor and an additional The secondary winding of the first transformer is connected to its main secondary winding, the first output of the additional second winding of the first transformer is connected via a switch to the first output of the current limiting resistor, the second output of which is connected to the output of the additional secondary winding of the first transformer and to the zero potential bus, filter output through the threshold element is connected to the control input of the key. Sources of information taken into account in the examination 1. USSR author's certificate number 698004, cl. G 06 G 7/12, 1978.

2. USSR author's certificate according to the application 2820905 / 18-24, cl. G 06 G 7/12, 1979 (prototype).