SU1213506A1 - Device for measuring dynamic characteristics of pulse electric discharges - Google Patents

Abstract

This invention relates to a technique for measuring electrical discharge parameters. The purpose of the invention is to expand the functionality of the device. Synchronizer sync pulses 7 change the state of switch 5 and the polarity of electrodes 1. The measuring channels of two-channel recorder 6 are connected to the anode and cathode through the outputs of acoustic radiation receivers 2, and therefore the transfer functions of the acousto-electric channels amplify the measurement error caused by their nonidentity. The magnitude of the delay in the delay lines 3 is chosen greater than the duration of the discharge pulse. The device makes it possible to simultaneously obtain realization of elastic oscillations at the anode and cathode in the form of time or frequency dependencies. 1 il. g Cl 2 I S 00 SP Od

Description

The invention relates to a technique for measuring electrical discharge parameters and can be used to measure the parameters of elastic vibrations in the anode and cathode in pulsed electrical discharges.

The purpose of the invention is to expand the functional capabilities of the device by jointly studying the elastic oscillations of P1J in the anode and cathode and improving the measurement accuracy by arranging the error caused by the “edeitichnost” channels of the image.

The drawing shows a block diagram of the device

The device contains identical electrodes 1, which serve as an anode and cathode, acoustoelectric transducers 2 (acoustic radiation receivers mechanically connected to electrodes 1 through acoustic lines of delays 3, discharge power source 4, switch 5, two-channel cross-switching device 6 channels, synchronizer 7, with the positive and negative leads of the power supply source 4 connected to the input of the switch 5, the outputs of which are Prgr: connected to the electrodes 1, the outputs of the acoustic detectors in 2 they are connected to the inputs of a two-channel recording device 6 with cross-channel switching, the first and second outputs of the synchronizer 7 are connected to the control inputs of the switch 5 and the recording device 6, and the third output of the synchronizer 7 is intended for connecting the initiating unit, which may be part of the source 4 power supply

The device works as follows.

The sync pulses from the first output of the synchronizer 7 periodically change the state of the switch 5, which changes the polarity of the electrodes 1. Thus, each electrode 1 periodically becomes either a cathode or an anode of a discharge device. At the same time, the sync pulse from the second output of the synchronizer 7, acting on the control input of the two-channel recorder 6, makes cross-switching of its measuring channels relative to the inputs such

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at the same time, one of the channels is always connected to the output of the acoustic receiver 2 connected to the cathode, and the other of the channels to the output of the acoustic receiver 2 connected to the anode. This leads to the fact that the transfer functions of the acoustoelectric channels (acoustic receivers 2 with acoustic delay lines 3) are equalized for each period consisting of two discharge cycles, resulting in the elimination. The measurement error is caused by the nonidentity of the acoustoelectric channels.

Depending on the composition of the two-channel recording device, the device allows the simultaneous realization of elastic oscillations at the anode and cathode in the form of time or frequency dependencies. Acoustic delay lines 3 allow to exclude the effect of electrical discharges on the measuring channels of the recording device 6, for which the delay value in the delay lines 3 is chosen longer than the duration of the discharge pulse.

Claims (1)

Invention Formula A device for measuring the dynamic characteristics of pulsed electrical discharges, comprising electrodes serving as an anode and cathode, a discharge power source, a first acoustic radiation receiver mechanically connected to one of the electrodes via an acoustic delay line, and a recording device characterized in that In order to expand the functionality by jointly studying the elastic oscillations in the anode and cathode and increasing the measurement accuracy, a second receiver of acoustic radiation mechanically connected to another electrode through an acoustic delay line, a switch n synchronizer, both electrodes are identical, acoustic radiation receivers are acoustoelectric transducers, and the registering device is two-channel, cross-switched; I 121E5064 with positive and negative converters. connected to ny1 conclusions of the power supply source measuring inputs of the registering connected to the inputs of the switch, the device, the first and second outputs The switched outputs of which the sub-synchronizer is connected to the control of the anode and cathode, the outputs of the switching inputs and the first and second acoustoelectrical devices.