SU1216810A1 - Time relay - Google Patents

Abstract

The invention relates to a pulse technique and can be used in automation systems, telemechanics communication. The purpose of the invention is to increase the reliability and increase the threshold of the time relay when it is used to enter the time delay. The device contains transistors I and 2, zener diodes 3, 4 and 5, capacitor 6, resistors 7, 8, 9, 10, 11 and 14, diode 12, control contact 13. Resistor 14 and zener diode 5 form a parametric voltage regulator, capacitor. 6 and the resistors 7 and 8 are the time of the master circuit, which determines the time delay for switching on the time relay. The outputs of the time relay are terminals 15 and 16. Improving the reliability is achieved by the introduction of a diode of 12. 2 sd f-ly. 1 yut. Od 00 IS

Description

The invention relates to the Sh-Shul technique and can be used in automation systems, telecoms NIKI and communications.

The purpose of the invention is to increase the reliability and increase the threshold of the time relay when it is used to introduce a time delay in a switching circuit with pulsed signals generated using a current source that supplies a time relay.

The drawing shows a diagram of a time relay.

The relay contains the first 1 and second 2 transistors, the first 3, the second 4 and the third 5 zener diodes, the time setting capacitor 6, the first 7, the second 8, the third 9; fourth 10 and fifth resistors, diode 12, control. Pin 3 and resistor 14.

Resistor 14 and Zener diode 5 form a parametric voltage regulator, and capacitor 6 and resistors 7 and 8 form an RC circuit, the midpoint of which is connected to the base of the first transistor, the emitter of which is connected via series connected to the base of the second A transistor whose emitter is connected via the Zener diode 4 to the anode of diode 12, whose cathode is connected to the first power supply line, the collector of transistor 2 and the anode of diode 1, through outputs 15 and 16 of the time relay. A stub-chitron 4, in conjunction with p e ™ transistors 10 and 11, ensures the locking of transistor 2 in the absence of an unlocking negative potential at the base of transistor 2 from the amplifier side of transistor 1. The time relay is turned on by control contact 13. Introduction to the diode device 12 allows using transistor 2 as a key with outputs 15 and 16 for positive signals generated using a time relay power supply.

The device works as follows

In the initial state, the contact 13 is open, the capacitor 6 is discharged, the transistors 1 and 2 are locked. Positive-polarity pulses arriving at output 16 5 do not lead to the opening of transistors 1 and 2 due to the presence of zener diodes 3 and 4 in the emitter circuits, respectively,

Thereby, the current flowing through the diode 12 and the resistors 7 and 8 causes the capacitor 6 to recharge. However, during the pulse duration, the capacitor 6 does not have time to charge the 5 transistor 1

n 2 remain closed and the pulses do not arrive at the load. After closing the control contact 13, the capacitor 6 is charged from a parametric stabilizer on the Zener diode 5 and a resistor 14 to a voltage determined by a divider on the resistors 7 and 8. The charging circuit time constant depends on the capacitor 6 resistors 7 and 8 determine the time delay for the time relay to be activated. The opening of transistors 1 and 2 will occur after the delay time has passed and when a positive polarity pulse arrives at output 16

an external generator, while the load is connected to the generator for the duration of each pulse until the control

Claims (2)

pin 13 After disconnecting the control pin 13, the capacitor, 6 times 1e, is pressed through the resistor 7, transistors 1 and 2 are closed and the pulses from the generator to the load are stopped. Invention Formula 1. The time relay containing the time capacitor, the first one, the lining of which is connected to the first terminal of the first resistor and through the control contact to the first power supply terminal, the second plate is connected to the base of the first transistor: and through the second resistor to the second power supply bus This means that, in order to improve reliability, a diode was inserted into it, the first pin of which is connected to the emitter of the first transistor, the second pin to the first output of the control contact, the first pin of the diode and the collector. transistor are output time switch and the second terminal of the first resistor connected to the base of the first transistor. 2. The relay according to claim 1. characterized by the fact that, in order to increase 3 1216810 threshold, between the second stage of the zener diode, and the base the second facing the time of the master con-first transistor through the fourth The capacitor and the base of the first transistor-resistor are connected to the first pattern and the chain from the diode is introduced. tly coupled amplifier to j-j - Relay on PP. 1 and 2, rum transistor, the zener diode is accounted for by the fact that the emitter. the third resistor, the base of the second transistor through the fifth transistor is connected to the second transistor connected to the second bus by the source plate of the master capacitor power, and between the emitter of the persistor, the collector to the second bus transistor and the first stage the source of the lithium, the emitter - to the per-diode included a second zener diode. Compiled by V.P. Testament Editor N.Rogulich Tehred t.Dubinchak Proofreader E.Sirokhman Order 1004/60 Circulation 644 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Branch 1ShP Patent, Uzhgorod, Proektna St., 4