SU615430A1 - Pulsed thyratron - Google Patents

Description

The invention relates to electronic engineering and may be HcnojibsoBaHo in the electrovacuum industry for training and testing the durability of thyratrons. A device is known for testing thyratrons in a modulator circuit with a full charge of energy storage Ij, which contains a forming line, is charged from a power drain through a choke and connected to the device under test through a load. However, this device provides any type of test for voltage, but it has a greater power consumption of the forming line and consumes more power, since the power is dissipated on the load. It is also known a device for testing pulsed thyratrons (2 |), which provides a test mode charged from a power source through a charging element and a choke by a capacitor and a forming line, which accumulates energy during the discharge of a capacitor from a rotary load through a valve. through a different valve and choke, form a flat chaogb pulse. This device has disadvantages that limit its use for all classes of switches: firstly, at high current and in Because of the low inductance of the low-voltage cell and the significant inductance of the high-voltage cell; The idle mode is established during several periods. The closest in technical essence in the achieved result K of the proposed inventor is the device A test for pulsed thyratrons} 3j, containing a series-connected constant-voltage source, a common choke, forming a line R a split pulsed transformer connected in series. The transformer secondary winding is connected via a DIODE delay line, the output of which is connected via an additional charging choke and the second diode to the power supply. The device under test is connected to the output of the forming line and the output of the primary winding of the pulse transformer.

A disadvantage of the known device is the high energy intensity of the forming line, which increases the size and weight of the device. In addition, the device is not suitable for testing medium and high power thyratrons, since there are no separator diodes capable of withstanding the reverse voltage of high steepness after the passage of a large pulsed current. In connection with this, the range of tested voltages is reduced by a factor of 8-10.

The purpose of the invention is to reduce the size and weight and narrow the range of the tested voltages.

The goal is achieved by adding an additional forming line, a resistor, a diode, an inductance and a KOMMytaTop to the proposed device, with the series-connected forming line and the resistor connected between the negative terminal of the constant voltage source and the case, and inductance, between the mnnusovym output of a source of constant voltage and the common point of the charge choke and the forming line is switched on the switch.

; Such inclusion of additional elements allows to reduce energy-consuming: the forming line, and, consequently, the dimensions and weight of the device, and increase the range of the test voltage.

The drawing shows the scheme of the described device.

The device contains the test device I, forming line 2, resistor 3, charging choke 4, voltage source 5, switch 6, additional forming line 7, diode 8, inductance 9 ..

As an additional switch, a thyratron or an impulse diode can be used. The additional switchboard is designed for si tc and restarting the forming line limni 2 to load 3 and forming line 7.

The operation of the circuit is as follows.

When the control signal is applied to the input of the thyratron 1 (the device under test), the sequence is ignited and the restarting current of the forming line 2 begins to flow through it and the restarting wave moves to the end of the forming LINE and, having reached the end of the forming line, reflects Reverse With the appearance of the reverse polarity at the end of the forming line, the switch 6 is ignited, which causes the energy of the forming line 2 to load 3 and the forming line 7. By applying

After the additional forming line 7, after switching on the forming line 2, a part of the negative polarity energy (reverse voltage) remains, which is necessary to restore the dielectric strength of the thyratron. After the discharge of the forming line 2 begins the process of charging the latter. Simultaneously with the charge of the forming line 2, the forming line 7 is recharged through the diode 8 and inductance 9, after which its energy returns to the forming line 2.

Due to the recharge of the forming line 2, the power consumption of the latter, as compared with the prototype, is reduced by 2 times; not taking into account the delay of the prototype, the energy intensity is reduced by no less than 4 times. The power capacity of the additional forming line in the proposed ycTpoHctBe is 10% of the power capacity of the main forming line.

The device allows, and with the increase of the load 3, to vary the reverse voltage of the test thyratron within wide limits, while the magnitude of the pulsed current through the latter is conserved. With large values of the pulse current and a high steepness of increase, its inductance of the cells becomes comparable with the inductiveness of the connecting wires and the inductance of the capacitors, and in this case the forming line can be replaced with one capacitive storage.

Thus, the circuit provides all the necessary test modes, as well as the natural circuit at any values of power and current steepness, thus reducing the power consumption of the forming line compared to the prototype, reducing the dimensions and weight and increasing the range of the tested voltages.

Claims (3)

1. Ivanov A. B., Sosnovkin L. N., Pulse microwave transmitters, M. Sov. radio, 1956, 2. USSR author's certificate No. 450337, cl. H 03 K 5/159. 1971. - 3. USSR author's certificate No. 314160, cl. G OJ R 31/24, 1969.