SU742903A1 - Device for protecting user in dc circuit - Google Patents

Description

Union of Soviet

Socialist

Republics (io 742903

State Committee

O P I S A N I E

Inventions

TO AUTHOR'S CERTIFICATE

USSR for Inventions and Discoveries (61) Additional to author. certificate-wu - (22) Declared 12/30/07 4 (21) 2089167 / 24-07 with the addition of application No. - (23) Priority ’-

Published on June 25th, 1980. Bulletin No. 23

Date of publication of the description 27.06.80 (51) M. Cl ²

G 05 F 1/58

H 02 H 7/20 (53) UDC 621.316. .722.1 (088.8) (72) The inventors

G.A. Markin, I.A. Nosova and R. Pulatov (71) Applicant (5 4) DEVICE FOR PROTECTING THE CONSUMER IN A DC CIRCUIT

I

The invention is intended for use as a sensitive element in automation and computer systems to protect the consumer from increasing or decreasing the output voltage in excess of a given tolerance. ⁵

Known devices for consumer protection in the DC circuit [1].

The closest known technology.

.. m 10 solution is a device for consumer protection in a DC circuit, containing an actuator, the power circuit of which shunts the terminals for connecting the consumer, and the control input is connected to the output of the DC amplifier, the input connected to the output of the sensing element, fixing the voltage in the circuit consumer And · 20

However, all such devices respond to increments of the same sign.

The purpose of the invention is to expand the functionality of the device.

This is achieved by the fact that the sensitive element is made on two parallel-counter-connected optocoupler elements.

The drawing shows a schematic diagram of a device.

The device consists of a sensing element 1 on two parallel-counter-active optocoupler elements, a DC amplifier 2 and a performer. element 3.

The device operates as follows.

The power supply of the constant duke amplifier (DCT) is carried out after receiving the output voltage of a given level of the parameter on the output divider of the power source through a photoresistor (not shown in the drawing).

When the output voltage corresponds to the specified level, the signal supplied from the output divider (not shown) of the power source is equal to the voltage taken from the reference voltage source (not shown) of the stabilizer connected to the input, and the sensor is de-energized.

Claims (2)

(54) DEVICE FOR CONSUMER PROTECTION IN A CURRENT CURRENT CURRENT. The invention of guides is intended to be used as a sensitive element in automation and computer systems for protecting users from increasing or decreasing the output voltage over a specified tolerance. The devices for protecting consumer B of the direct current circuit l | are known. The closest known technical solution is a device for protecting a consumer in a direct current circuit, which contains an actuator whose power circuit provides a shunt for connecting the consumer and a control input with the output of the dc amplifier, the input of the connected output of the sensing element, fixing the voltage in the circuit of the consumer 2. However, all such devices respond to increments of one character. The purpose of the invention is to expand the functional capabilities of the device. This is achieved by the fact that the sensing element is made on two parallel-opposite-connected optocoupler & amps. The drawing shows a schematic diagram of the device. The device consists of a sensing element 1 on two parallel-to-included optocoupler elements, an amplifier 2 of direct current and a performer. element 3. The device operates as follows. The power supply of the constant amplifier (UFD) is carried out after obtaining the output voltage of a given parameter level at the output divider of the power source through a photoresistor (not shown in the drawing). If the input voltage corresponds to a given level, the signal supplied from the output divider (not shown) of the power supply is equal in value to the NIKI of the oyor voltage (not shown in the drawing) switched on at the input stabilizer, and the sensitive element ps apeny mismatch, i.e. dropping a controlled voltage to one or the other side, one of the two; parallel-on optocouplers are unlocked and generates a signal at the input of the UPT 2, which, in turn, means the activation of the actuator 3 and disconnects the stabilizer from the rectifier. With different signs, respectively, the different optocouplers of the sensitive element 1 work. The use of two parallel-encounters, BUT: the included optocoupler & 1x elements as the sensitive element makes it possible to exclude one control device and one actuator, i.e. greatly simplify the protection scheme, reduce its costs and increase equity. 3 The invention The device for flooded the consumer in the DC circuit containing an actuator, the power circuit of which shunts the leads for the consumer, and the control input is connected to the output of the DC amplifier, which is connected to the output of the sensing element, fixing voltage in the consumer circuit, characterized in that, in order to expand the functional capabilities of the device by providing protection against both decreasing and increasing voltage on the consumer with respect to down, the sensitive element is made on the parallel-counter-enabled optocoupler elements. Sources of information passed into consideration in the examination 1. US patent number 3437905, cl. 321-19, 1963. 2. Agapov M.V. and Pikhuta A.V. Electric protection of semiconductor power sources. Soviet Radio, 1966, p. 151.