SU744766A2

SU744766A2 - Release-delayed timer

Info

Publication number: SU744766A2
Application number: SU762427464A
Authority: SU
Inventors: Евгений Иванович Трофимов; Виктор Арсентьевич Курзин
Original assignee: За витель
Priority date: 1976-12-07
Filing date: 1976-12-07
Publication date: 1980-06-30

Description

(54) РЕЛЕ ВРЕМЕНИ С ЗАДЕРЖКОЙ НА ОТПУСКАНИЕ(54) TIME RELAY WITH DELAY TO LEAVE

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Изобретение относитс к электротехнике и может быть использовано в устройствах автоматики дл формировани необходимых по длительности выдержек времени.The invention relates to electrical engineering and can be used in automation devices for generating the required time durations for exposures.

Известно реле времени с задержкой на отпускание по основному авт. св. № 474866, содержащее выводы дл подключени к источнику питани посто нного напр жени , два врем задающих конденсатора, включенных последовательно с зар дными резисторами , транзистор, соедин юпдий разноименные пластины врем задающих конденсаторов , резистор св зи, включенный между базой транзистора и точкой соединени вывода катушки реле с катодом тиристора, подключенного анодом к положительной обкладке врем задающего конденсатора. , Недостаток этого реле состоит в том, что часть энергии, запасенной врем задающими конденсаторами при переходе транзистора в открытое состо ние расходуетс на резисторах, что значительно сокращает врем выдержки. Сопротивление этих резисторов и общего резистора увеличивает врем зар да врем задающих конденсаторов, т. е. врем подготовки реле времени к работе .Known time relay with a delay on the release of the main bus. St. No. 474866, containing terminals for connection to a DC power supply, two times of a driving capacitor connected in series with charging resistors, a transistor, a junction of disconnected plates, a time of driving capacitors, a coupling resistor connected between the base of the transistor and the connection point of the coil output a relay with a thyristor cathode connected to the positive plate by the time of the driving capacitor. The disadvantage of this relay is that part of the energy stored by the driver capacitors when the transistor goes into the open state is spent on the resistors, which significantly reduces the holding time. The resistance of these resistors and the common resistor increases the charging time of the driving capacitors, i.e. the time of preparing the time relay for operation.

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Целью изобретени вл етс уменьщение величины врем задающих конденсаторов и времени подготовки реле к работе.The aim of the invention is to reduce the magnitude of the time of the driving capacitors and the time of preparing the relay for operation.

Дл этого реле времени с задержкой на отпускание, снабжено двум разделитель . ными диодами, причем один диод подключен анодом к точке соединени первого врем задающего конденсатора с выводом обмотки реле, а катодом - к точке соединени зар дного резистора, эмиттера транзистора и второго врем задающего конденсатора, другой диод подключен анодом к выводу дл подключени положительного полюса источника питани , а катодом - к точке соединени анода тиристора со вторым врем задающим конденсатором.For this time delayed release, it is equipped with a two separator. diodes, one diode connected by the anode to the junction point of the first time of the driving capacitor with the relay coil terminal, and the cathode to the junction of the charging resistor, transistor emitter and the second driving capacitor, the other diode is connected by an anode to the output terminal for connecting the positive pole of the power supply and the cathode to the point of connection of the anode of the thyristor with the second time of the reference capacitor.

На чертеже представлена принципиаль15 на электрическа схема реле времени.The drawing shows the principle of the electrical circuit of a time relay.

Оно содержит зар дный резистор 1, последовательно которому подключены врем задающие конденсаторы 2 и 3, соединенные параллельно через разделительные диоды 4 и 5. Разноименные пластины врем задаю20 щих конденсаторов 2 и 3 соединены Транзистором 6, база которого через резистор 7 соединена с общей точкой последовательно включенных реле 8 и тиристора 9, а другиеIt contains a charging resistor 1, in series with which the time setting capacitors 2 and 3 are connected in parallel via separation diodes 4 and 5. Diffuser plates of the time setting capacitors 2 and 3 are connected by a transistor 6, the base of which is connected through a resistor 7 to a common point of series-connected relay 8 and thyristor 9, and others

Claims

dissimilar plates, time of the setting capacitors 2 and 3, are connected in series with relay 8 and thyristor 9. Separating diode 4 is connected by cathode to point 10, anode to point 11, and separating diode 5 is connected by anode to terminal 12 to connect to the positive pole of the power supply, and the cathode to the point 13 of the connection of the anode of the thyristor 9 with the positive plate of the capacitor 3. The time relay operates as follows. In the initial state, the transistor 6 and the thyristor 9 in the closed state, the time of the capacitors 2 and 3 are discharged, p le 8 de-energized. When the time relay is connected to the power source, the time of the driving capacitors 2 and 3 through the separation diodes 4 and 5 and the common charging resistor 1 is charged to the voltage of the power source. After the control signal is applied to the control electrode of the thyristor 9, it opens, connecting the relay 8 and applying a positive mixture through the resistor 7 to the base of the transistor 6. The transistor 6 switches to the open state, connecting the time between the driving capacitors 2 and 3. The voltage between points 10 and 12 sharply decrease until the voltage drops across the junction of transistor 6, and between points 13 and 11 increases jumpwise to twice the voltage of the power source. The ports 4 and 5 are closed by reverse charging the time of the setting capacitors 2 and 3, the KOTOpbix discharge occurs only through the coil of the relay 8. Relay 8 is activated and held in this state until the discharge current becomes equal to the release current. The retention time is determined by the capacitance, the time of the driving capacitors 2 and 3, the resistance of the winding of the relay 8 and depends on the magnitude of the release current of the relay 8 and the voltage of the power source. After the discharge current becomes equal to the tripping current of the thyristor 9, it closes by disconnecting the relay 8 and removing the positive bias from the base of the transistor 6. Transistor 6 goes into the closed state. The timing of the drive capacitors 2 and 3 through the separation diodes 4 and 5, and the common resistor 1 is charged before the voltage of the power source. Time relay is ready to re-work. The use of the invention will eliminate the loss of energy, the time saved by the drive capacitors, and, consequently, increase the time delay, and reduce the time for preparing the time relay for operation. The economic effect of the use of the invention is achieved by reducing the material consumption of the device and increasing productivity. Formula of the invention Relay of time with a release delay on an auth. St. No. 474866, characterized in that, in order to reduce the magnitude of the time of the driving capacitors and the time of preparing the relay for operation, it is equipped with two separation diodes, one diode being connected by an anode to the connection point of the first time of the driving capacitor with a relay winding terminal, and the cathode to the point the connection of the charging resistor, the emitter of the transistor and the second time of the driving capacitor, another diode is connected by an anode to the output to connect the positive pole of the power supply, and the cathode to the point of connection of the thyristor anode with volts Time Sets eye condenser.

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