SU463079A1 - Device for testing gas-discharge clipper diodes - Google Patents

Description

one

The invention relates to radio engineering and can be used in the electrovacuum industry for training and testing the reliability of gas discharge cliper diodes (GCD).

A device for testing clipper diodes with a load in a switch cathode circuit is known. A significant drawback of the device is that the tests are carried out at a constant current amplitude, which reduces the quality of the instrumentation training.

In the proposed device, in order to create a controlled mode, a second thyratron is connected in parallel to the load;

The drawing is a schematic diagram of the proposed GCD test device.

The device contains a switching thyratron 1, forming line 2, a generator load - a resistor 3, a thyratron 4, the control electrode of which is connected to the generator of control pulses 5 and to the switch anode through series-connected resistor 6 and capacitance 7, output terminals to which

test device 8.

In the absence of a signal at the control electrodes of the thyratrons 1 and 4, the forming line 2 and the capacitance 7 are charged from the source;. The voltage on the capacitor 7 is applied to the control electrode of the thyratron 4 and prevents it from being automatically started. During this period, the thyratrons are closed and the device under test holds the opposite direction.

When voltage pulses are applied to the control electrode of the switching thyratrop I (it starts with periodic pulses) and there are no triggering pulses on the control electrode of the thyratron 4, the latter is closed and the thyratron 1 is open. The forming line 2 is discharged: through the thyratron K and, consequently, the device under test 8 is flowing current that corresponds to the normal operation of the microwave generator.

In the presence of a triggering pulse on the control electrode of the thyratron 1 (t / ci) the arrival of a voltage pulse Uc.2 on the control electrode of the thyratron 4 (the triggering of the thyratron 4 is carried out by a packet of pulses and synchronized with the start of the thyratron 1) the resistor 3, as a result of which the pulse current of the tiratron 1 increases, and, consequently, the pulse current flows through the device under test,

corresponding to the mode of operation, in which in real conditions the internal resistance of the microwave generator is zero.

Thus, when testing the GCD using the proposed device, current impulses of different amplitude pass through the test device, and the BO distribution of time depends on the ratio of the frequencies of triggering pulses of thyratrons 1 and 4. The ratio of frequencies is set depending on the required arcing, i.e. the device allows controlling the amplitude of the current through the test device and simulating any real conditions of operation of gas discharge clipper diodes.

4 Subject of the invention

A device for testing gas-discharge klinner diodes, containing a switching thyratron with a load in the cathode, forming a line, characterized in that, in order to create a controlled mode, a second thyratron is connected in parallel with the load, the control electrode of which is connected to the anodol; The first thyratron is connected via a successively connected resistor and capacitance, while the terminals for connecting the test device are connected to the cathode of the second thyratron and the output of the forming line.

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