SU1394211A1 - Bipolar power source - Google Patents

Abstract

The invention relates to electrical engineering and can be used in secondary power sources. The goal is to increase efficiency while simplifying the source. The source contains stabilizers 1 and 2 voltages, each of which is made on transistors with a different type of conductivity, which have the property of self-protection in the event of overcurrent. The common connection point of the linear splitter (resistor 16) of stabilizer 1 and nonlinear splitter (resistor 12-) of stabilizer 2 is connected to input 5 of stabilizer I via a resistor 23, and to a common bus 19 through a thyristor 20, an input electrode connected to an output terminal 7 Connecting the triggering resistor 23 to the opposite inputs of transistors 9 and 10 contributes to the almost simultaneous switching on of stabilizers 1 and 2. Open thyristor 20 provides self-defense mode. 1 hp f-ly. 1 play .. a S cl

Description

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The invention relates to electrical engineering and is intended for use in secondary power sources.

The goal is to increase efficiency while simplifying the source.

The drawing shows a diagram of a two polar power source.

The source consists of two stabilizers 1 and 2 voltages. Each of the stabilizers 1 (2) has a regulating transistor 3 (4) with an emitter, a collector and a base connected respectively to input output 5 (6), output terminal 7 (8) and collector of transistor 9 (10) of the DC amplifier. Inputs, i.e. The emitter and the base of the transistor 9 (10) are separately connected to the average non-linear outputs on resistor 11 (12) and zener diode 13 (14) and linear on resistors 1 5 and 16 (17 and 18) of voltage dividers. Each of the dividers is connected to the common bus 19 directly from the side of the resistors 11 and 17, and from the side of the resistors 12 and 16 through the thyristor 20, the control electrode of which through the resistor 21 is connected to the viewer 7 directly or through a resistor

22 (indicated by the dotted line). Total point of resistors 12 and 16 through a resistor

23 is connected to the output 5 of the stabilizer 1,

The bipolar power supply operates as follows.

When the input voltage is applied, the starting current from view 5 through resistor 23 and resistors 16 and 12 goes to the base of transistor 9 and emitter of transistor 10, respectively. Under the action of this current, transistors 3 and 4 are almost simultaneously removed.

At the same time through the transistor 3 and the resistor 21 current flows to start the thyristor 20, the opening of which contributes to the entry of the stabilizer 1 in the stabilization mode. If, prior to applying the voltage to the clamp 5, the clamp 7 is shorted to the bus 19, then the thyristor 20 will not open. Monitoring normal operation, i.e. for opening the thyristor 20, it can be done if instead of the resistor 23 the glow lamp is turned on. In the absence of operator access for visual control of the triggering, the supply to the control electrode of the thyristor 2 of the trigger bias can be guaranteed by the inclusion of a resistor 22, indicated by a dotted line.

Since the resistor 22 is designed to operate at a relatively high short-circuit current, the energy losses in it in the stabilization mode are insignificant. Reliable power up

thyristor 20 contributes to the creation of self-stabilizers of stabilizers 1 and 2 when they are overloaded with current.

This is due to the fact that when the thyristor 20 is triggered, the stabilizers

I and 2 are turned on in a well-known pattern on control and control transistors with the opposite conductivity type. Stabilizers performed at specified

scheme, have the property of reliable self-protection against overcurrent.

Common to both stabilizers is a thyristor start-up circuit - protection in an element of two

times simpler than the known means with similar functional purpose.

Claims (2)

1. A two-pole power source containing two voltage stabilizers, each made with a regulating transistor connected by an emitter, a collector and a base, respectively, to the input cable, the output terminal and the output of the DC amplifier, the inputs of which are separately connected to the average of the non-linear and linear voltage dividers, each of which is connected by a resistor first end to a common busbar, and the second end is connected to an output pin, and in the first voltage regulator the first resistor The linear voltage divider is connected to the input side through a current-limiting element, and connected to the common bus through a thyristor, the control electrode of which is connected to the output output through a current-generating resistor, in order to increase efficiency with simultaneous simplification source, the first resistor end of the nonlinear voltage divider of the second voltage regulator is directly connected to the first end of the linear voltage divider of the first voltage regulator. 31394211 2. The power source according to claim 1, t - the driving resistor is connected to the output of the fact that, with the output of the first stabilizer in order to increase the reliability of the yoke protection, after being introduced after the output circuit short-circuited in the power section resistor, water voltage regulator, current