SU1297016A1 - Device for checking voltage generator - Google Patents

Abstract

The invention relates to automation and can be used in measuring generators and control systems of complex technology. The purpose of the invention is to expand the field of application of the device is achieved by connecting the flip-flops 1 and 4, the inertial elements 9 and 10 with their connections by performing a test when the test generator is in operation. 1 il. (L S yu ii

Description

The invention relates to automation and can be used in measuring generators and control systems of complex technology.

The purpose of the invention is to expand the field of application of the device by using it in the operation of the generator.

The drawing shows a functional electrical circuit of the device.

The device contains a Schmitt trigger 1, first 2 and second 3 differential amplifiers, counting trigger 4, element 5, rectifier 6, integrator 7, threshold element 8, inertial elements 9 and 10.

In the initial state, the signal does not arrive, the Schmitt trigger 1 does not work, the counting trigger 4 does not count, the voltage at the output of the rectifier 6 is absent, the threshold element is in the open state. A signal is generated at the output of the device, indicating that the generator under test is not working. Differential amplifiers 2 and 3 in this state supply permissive voltage levels to element 5. Through integrator 7 on

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and intetlltor 7 ni.ii a6; rrwnaoT per dogk nitelyuy 1H) 1khodmom terminal signal of the emergency state of the generator. At the same time, this signal is applied to the count inhibit input of the counting trigger 4. The count stops. The rectifier 6 inlet no longer receives a belt voltage. At the input of the threshold element 8, the negative voltage ceases to act, it opens and the readiness signal at the output of the device is removed.

In the proposed device, the generator signal in the monitoring process can be used for its intended purpose, because here it is not necessary to switch the generator winding in a special way. The generator output may not be transformer. The form of the signal and its duration do not matter, because in all cases before it arrives at the rectifier, it is converted into squares acting in antiphases. The emergency situation is recorded not by simply removing the ready signal, but by a separate signal that can be used for alarms.

An additional output terminal for the installation or emergency shutdown of the device is formed by a voltage indicating that the generator under test is not in an emergency condition. When connecting a device to a gene35

To a rator that produces a voltage of normal magnitude, the Schmitt trigger 1 starts to operate, the counting trigger 4 is alternately transferred from one stable state to the second, the output of the rectifier 6 produces a negative voltage of 40 s, which closes the threshold element 8 and sets the output devices voltage indicating normal

operation of the controlled generator. Differential amplifiers 2 and 3 are in their initial state.

The alarm condition is fixed

the instantaneous value of the output is eg a trigger 50, two inertial elements, the input at the device input is out of limits, and a Schmitt trigger whose input is installed; e are reference voltages that are fed to the first and second additional input terminals and are attached respectively to the second differential inputs amplifiers 2 and 3. Triggered differential amplifier 2 (3) through the element And 5

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and intet rltor 7 ni.ii a6; rrwnaoT per dogkhp-nitelyyuy 1H) on the input terminal signal of the emergency state of the generator. At the same time, this signal is applied to the count inhibit input of the counting trigger 4. The count stops. At the input, rectifier 6 ceases to arrive. belt tension. At the input of the threshold element 8, the negative voltage ceases to act, it opens and the readiness signal at the output of the device is removed.

In the proposed device, the generator signal in the monitoring process can be used for its intended purpose, because here it is not necessary to switch the output winding of the generator in a special way. The generator output may not be transformer. The shape of the signal and its duration are irrelevant, because in all cases before it arrives at the rectifier, it is converted into square wave acting in antiphase. An emergency is not detected by simply clearing the ready signal, but by a separate signal that can be used to alarm or shut down the appliance.

Ratura. This expands the field of application of the device.

Claims (1)

Invention Formula A voltage generator control device containing two differential amplifiers, an AND element, an integrator, a rectifier and a threshold element, the first inputs of the first and second differential amplifiers are the control input of the device, the second inputs are the corresponding inputs of the device voltage reference, so that that, in order to expand the field of application of the device by using it in the operation of the generator, a countable the control input of the device, and the output is connected to the synchronous input of the counting trigger, the direct and inverting outputs of which through the first and second inertial elements, respectively, are connected to the first and second inputs of the rectifier, the output 312970164 The cattle pro is connected via pirogovy by the corresponding “moves of the element I, you are the element of The first d) is the output of the device, the course of which, through the integrator, the subframes of the first and second differential keys to the reset input of the countable trinal amplifiers are connected to the corresponding and the second output of the device.