SU924904A1

SU924904A1 - Device for overload protection of electric telegraphic relay

Info

Publication number: SU924904A1
Application number: SU802923990A
Authority: SU
Inventors: Юрий Вениаминович Двинянин; Исаак Иосифович Штеренберг
Original assignee: Предприятие П/Я В-2132
Priority date: 1980-05-13
Filing date: 1980-05-13
Publication date: 1982-04-30

Description

II

Изобретение относитс к технике телеграфной св зи и может использоватьс дл защиты выходных ключей электронного телеграфного реле от Перегрузок по току со стороны нагрузки (линии).The invention relates to a telegraph communication technique and can be used to protect the output keys of an electronic telegraph relay from overcurrent on the load side (line).

Известно устройство дл защиты электронного телеграфного реле от перегрузок, содержащее датчик сигнала перегрузки, выходы которого соединены со входами ключа, выход которого подключен ко входу формировател импульсов 1J.A device for protecting an electronic telegraph relay against overloads is known, which comprises an overload signal sensor, the outputs of which are connected to the inputs of a switch, the output of which is connected to the input of a pulse driver 1J.

Однако известное устройство имеет низкое быстродействие.However, the known device has a low speed.

Цель изобретени - повышение быстродействи .The purpose of the invention is to increase speed.

Дл достижени указанной цели в устройство дл защиты электронного телеграфного реле от перегрузок, содержащее датчик сигнала перегрузки , выходы которого соединены со в-ходами ключа, выход которого подключен ко входу формировател импульсов,To achieve this goal, the device for protection of the electronic telegraph relay against overloads contains an overload signal sensor, the outputs of which are connected to the key in-turns, the output of which is connected to the input of the pulse shaper,

йвёдены элемент И, дифференцирующий блок и триггер, выход которого подключен к одному входу элемента И, другой вход которого соединен со входом дифференцирующего блока, выход которого соединен с первым входом триггег а, второй вход которого соединен с выходом формировател импульсов .The element is an AND element, a differentiating unit and a trigger, the output of which is connected to one input of the element I, the other input of which is connected to the input of the differentiating unit, the output of which is connected to the first input of the trigger a, the second input of which is connected to the output of the pulse former.

На чертеже представлена структурна электрическа схема предлагаемого устройства.The drawing shows a structural electrical circuit of the proposed device.

Устройство дл защиты электронного телеграфного реле от перегрузок содержит дифференцирующий блок 1, элемент И 2, триггер 3, формирователь импульсов , ключ 5 и датчик 6 сигнала перегрузки.The device for protection of the electronic telegraph relay against overloads comprises a differentiating unit 1, an element AND 2, a trigger 3, a pulse shaper, a switch 5 and an overload signal sensor 6.

Устройство работает следующим образом .The device works as follows.

Claims

The pulse of the leading edge of the input signal, the trigger 3 is set to the position at which the resolving potential is applied to the element 2. The input signal through the element And 2 is fed to the input of the electronic telegraph relay (not shown). In the presence of an overload line with a pulse from the forcing device k, the trigger 3 is set to a position where an inhibitory potential is applied to element 2 and the input signal does not pass to the input of an electronic telegraph relay, the output key of which is closed. Thus, the pulse of each leading edge of the input signal interrogates the state of the line, and in the event of a current overload of the input signal; the key opening key is removed from the input of the electronic telegraph relay. The output key is closed, thereby protecting it from current breakdown. The use of an optical key, logic elements on the microcircuits allows to increase the speed of the proposed protection device to microseconds, automate the shutdown process after eliminating line overload and, as a result, increase the reliability of not only the 3dt shield device, but also the electronic telegraph relay. An apparatus for protecting an electronic telegraph relay from overloads, comprising an overload signal sensor whose outputs are connected to a key input, the output of which is connected to an input of a pulse shaper, characterized in that, in order to improve speed, an I element, a differentiating unit and the trigger, the output of which is connected to one input of the element I, the other input of which is connected to the input of the differentiating unit, the output of which is connected to the first input of the trigger, the second input of which is soy Inonii yield PFN. Sources of information taken into account during the examination 1. Agapov M.V. and others. Electrical protection of semiconductor power supplies. M., Soviet Radio, 1966, p. 122 (prototype)