SU991558A2 - Device for control of electronic instrument - Google Patents

Description

The invention relates to a converter technique and can be used to control an electron-vacuum device (EVP), for example, an electron-beam valve (ELV).

According to the main author. St. No. 892602, a device for controlling an electrovacuum device, comprising a power source controlled by KJB04, connecting a power source with a control electrode of the electrovacuum device, a unit of starting pulses, control electrodes of the electrovacuum device and a controllable scrap, are connected, between the cathode of the control key and the control unit The connecting electrode of the electrovacuum device is connected in series with a source of blocking voltage and a resistor, in parallel with which are connected a thyristor, a diode and a series a circuit consisting of a thyratron and two resistors, the junction point of which is connected via a capacitor to the cathode of an electrovacuum device; moreover, the positive pole of the blocking voltage source, the anol of the thyristor, the cathode of the diode and the anode of the thyratron, the cathode of which is connected to the negative the pole of the mixing source, the positive pole of the electrovacuum device 1 connected to the cathode.

A disadvantage of the known device is that when the thyratron is unlocked, the electron tube remains open during the time of the recharging of the switching capacitor,

10 resulting in a dramatic increase in power dissipated at the anode of the lamp, which lowers the reliability and efficiency of the device, as well as the current consumed from the sources of positive voltage and bias, limited only by the characteristics of the lamp. In addition, the turn-on time of an EIS is limited by the anodic current of the lamp charging its input capacitance, which is controlled by removing the blocking voltage on the grid, and in order to reduce the activation time of the EIS, it is necessary to additionally unbolt the lamp when using an additional source.

25

The aim of the invention is to reduce the turn-on time T of the turn-off of the EEP, increase the reliability and efficiency of the device.

Delivered goal is achieved by

Claims (1)

30 that a transformer is inserted into the device for controlling an electrovacuum device, the primary winding of which is connected between the control electrode of the vacuum apparatus and the point of connection of resistors and a capacitor, and the secondary winding connecting the control electrodes of the electrovacuum device and control key to the control electrode of the vacuum electrode The device is connected to the beginning of the primary and the end of the secondary winding of the transformer. Thus, the introduction of a transformer leads to an additional control switch from pyranium during on-turn, due to the transformation of the voltage applied to the transformer primary winding during the charging of the switching capacitor and additional locking during the charging of the capacitor during shutdown, resulting in an increase in current, passed by the lamp, and the time of switching on the EED, respectively, is reduced accordingly, and the source short-circuit mode is also excluded, which increases the reliability and efficiency of the device. The drawing shows a diagram of the proposed device. The device for controlling an electro-vacuum device contains EVP 1, power supply 2, control key 3, voltage supply source.4, resistors 5-7, thyristor 8, diode 9, thyratron 10, capacitor 11, bias source 12, transformer 13, unit 14 starting pulses. The device works as follows. In the initial state, the key 3, the thyratron 10 and the thyristor 8 are closed and a negative voltage is applied to the control electrode of the EEP 1 from the source 12 through the resistors 6 and 7 providing the closed state of the EIS 1 When the thyristor 8 is unlocked with a start pulse from the block 14, the key is turned on 3, and the control electrode of the EEP 1 | th primary winding of the transformer 1 is applied voltage from source 2, cause an additional lamp unlocking during the formation of the overhang of the front of the control signal. The EEP 1 is turned off when the control signal from block 14 is applied to the control electrode of the tira- tron 10, which activation leads to forced reloading of the input capacitance of the EEP 1 to the voltage of bias source 12, and also to the discharge of the capacitor 11 through the resistor 7, the thyratron 10 and the source 12, wherein the key 3 is locked first by a voltage pulse on the secondary winding of the transformer 13, and then by restoring the locking voltage from source 4. Locking the key 3 causes the thyratron 10 to turn off. The device returns to its original state. Thus, the additional unlocking of the controllable key when turning on and locking when turning off in the proposed device makes it possible to reduce the turn-on time of the EDC and also increase the reliability and efficiency, the claims of the device for controlling an electrovacuum device, no. that, in order to reduce the on-time and off-time of the electrovacuum device, increase reliability and efficiency, a transformer was introduced into it, the primary winding of which is connected between the control electrode of the electrovacuum The instrument and the connecting point of resistors and a capacitor, and the secondary winding is connected to the control electrodes of electronic devices guides and controlled key, wherein to the control electrode of the electronic devices connected to the beginning end of the primary and secondary transformer windings. Sources of information taken into account in examination 1, USSR Copyright Certificate 892602, cl. H.02 M 1/08, 1980 (prototype)