SU1330748A1 - Bipolary relay - Google Patents

Abstract

The invention relates to the field of pulsed technology and can be used in telegraphy to form bipolar telegraph packages. The purpose of the invention is to increase the size and reliability of operation. This is achieved by eliminating through currents during switching. For this, a transistor 7 and a transistor 8 of the first and second conduction types, respectively, as well as two resistors, are additionally introduced into the two-pole relay. In addition, transistors 1 and 2 of the first conductivity type, transistors 3 and 4 of the second conductivity type, Zener diodes 5 and 6, resistors 9-17, load 18, sources 19 and 20 of the power supply, terminal 21, resistor 22 are shown. Voltage of the zener diodes is selected somewhat more voltage sources. 1 il. H It. .to ch § (/ s f8 ch 4 os o t,

Description

The invention relates to a pulse technique and can be used in telegraphy to form a bipolar telegraph package.

The aim of the invention is to increase the K1SH and the reliability of operation by eliminating through currents during switching.

The drawing shows a circuit diagram of the device.

The two-pin relay contains the first and second transistors 1 and 2 of the first conductivity type, the third and fourth transistors 3 and 4 of the second conductivity type, the first and second zener diodes 5 and 6, the fifth transistor 7 of the first conductivity type, the sixth transistor 8 of the second conductivity type and resistors 9-17. The emitter of transistor 1 is connected to the emitter of transistor 3, the first load 18 and the connection point of the opposite poles of the first and second power supply sources 19 and 20, the other poles of which are connected to the emitters and connected via the first and second resistors 9 and 10 to the bases of transistors 2 and 4, respectively .

The second output terminal 18 is connected to the collectors of transistors 2 and 4 and through the third resistor 11 is connected to the bases TpaH3V CTopoB 3 and 1, the collectors of which through the fourth and fifth resistors 12 and 13 connect to the bases of transistors 2 and 4, respectively. 3: .TViTTep and the collector of transistor 7 are connected to the emitter and base of transistor 2, and the emitter and collector of transistor 8 are connected to the emitter and base of transistor 4. A sixth resistor 14 is connected between the emitter of transistor 2 and the base of transistor 7. A seventh resistor 15 is connected between the emitter of the transistor 2 4 and the base of the transistor 8. The zener diode 5 is connected in series with the eighth resistor 16 between the second output terminal 18 and the base of the transistor 7, and the zener diode 6 is connected in series with the ninth resistor 17 between the second output terminal 18 and the base of the transistor 8.

The bases of transistors 1 and 3 are connected to the input terminal 21 through a resistor 22.

The breakdown voltage of zener diodes 5 and 6 is chosen somewhat higher than the voltage of sources 19 and 20.

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The device works as follows.

With the power on and zero potential at terminal 21, all transistors are closed, current through Zener diodes 5 and 6 is close to zero, and there is no current in load 18.

When a positive potential is applied to terminal 21, a current arises through the resistor 22 and the base-emitter junction of transistor 1. As a result, transistor 1 opens, and the current flowing through resistor 13 opens

5, a transistor 4. At the output terminal 23, a positive potential is established, and the current through the resistor 11 keeps the relay in a steady state even if the potential at terminal 21 drops to zero.

In this state, the relay current flows through Zener diode 5 and resistor 16. Transistor 7 opens and shunts the base-emitter junction of transistor 2. When measuring the polarity of the input voltage to negative transistor 3 opens and transistor 1 closes. The collector current of the transistor 3 flows through the resistor 12 and the naïve transistor 7. Therefore, the transistor 2 remains closed. The closing of the transistor 1 causes the closing of the transistor 4, and the potential of the terminal 23 decreases almost to zero. At the same time disappears

 the current through the Zener diode 5, which leads to the closing of the transistor 7. The collector current of the open transistor 3 is closed through the bava-emitter junction of the transistor 2, which opens,

0 and in the load 18 a current of the opposite direction arises. The current through the resistor 11 also changes direction and keeps the transistor 3 in the open state even at zero input

g voltage

Thus, the relay switches from the first state to the second. In this case, the open transistor 4 is first closed, and then the transistor 2 is opened, which ensures the absence of through current through the output transistors 2 and 4.

If positive potential is again applied to terminal 21, then analogously, due to the symmetry of the device, the relay switches from the second state to the first, and transistor 4 due to its input being shunted by an open transistor

31330748

ohm 8 opens only after the transistor 2 is closed, i.e. this beam eliminates the through current through

for three years, and then for three and three

transistors 2 and 4.

Claims (1)

Invention Formula A bipolar relay containing the first and second transistors of the first conductivity type, the third and fourth transistors of the second conductivity type, the first and second Zener diodes, seven resistors, the base of the first transistor is connected to the base of the third transistor and connected to the input terminal, the emitter of the first transistor is connected to the emitter of the third transistor , the first terminal of the load and the connection point of the opposite poles of the first and second power sources, the other poles of which are connected to the emitters and through the first and second resistors You are connected to the bases of the second and fourth transistors, respectively, the second load is connected to the collectors of the second and fourth transistors and through the third resistor Editor N. Shvydka Stay away. Mr. Shchedrin Tehred {.lodanich A. Corrector A. Tsk Order 3592/36 Circulation 901 Subscription VNIIPI USSR State Committee for inventions & discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 five 0 five connected to the bases of the third and first transistors, the collectors of which through the fourth and fifth resistors are connected to the bases of the second and fourth transistors, respectively, characterized in that, in order to improve efficiency and reliability, the fifth transistor of the first conductivity type, the sixth transistor of the second type conductivity, the eighth and ninth resistors, and the emitter and collector of the fifth transistor are connected to the emitter and base of the second transistor, respectively, the emitter and collector of the sixth transistor are connected to the emitter ohm and the base of the fourth transistor, respectively, the sixth resistor is connected between the emitter of the second and the base of the fifth transistors, the seventh resistor is connected between the emitter of the fourth and the base of the sixth transistor, the first zener diode is connected in series with the eighth resistor between the second output terminal and the base of the fifth transistor, and the BTopoii Zener diode in series with the ninth resistor between the second output terminal and the base of the sixth transistor. .v