SU1120463A1 - Versions of device for adjusting high-voltage rectiffier - Google Patents

Abstract

1. The dp control device is a high-voltage valve containing a power R5 trigger, the output of which is intended to be connected to the control input of a high-voltage valve, and the R - and 5 inputs through the corresponding threshold elements and oppositely connected diodes connected to the first output of the secondary transformer KRr, primary the winding of which is intended to be connected to a two-pole source of control pulses, characterized in that, with a circuit for improving noise immunity and reliability, it is equipped with the element OR- NOT, one-shot and triac, the second output of the secondary winding of the transformer is connected via a triac to the common wire of the device, (I control electrode of the triac is one-shot and the YLI-NOT element is connected to the outputs of the threshold elements. To about 4 O5 CO ig. /

Description

2. A device for controlling a high-voltage valve containing an RS-10VOY RS-trigger, the output of which is intended to be connected to the control input of a high-voltage valve, and R- and 5-inputs through the corresponding threshold elements and oppositely connected diodes are connected to the secondary winding of the transformer, the primary winding which is designed to be connected to a two-pole source of pulses of control 3, characterized in that, in order to improve mechanical stability and reliability, it is equipped with two single-oscillators and two tons According to the respective diodes, the control electrode of each thyristor is connected via a single vibrator to the output of the threshold element connected to the other thyristor.

one

The invention relates to electrical power and can be used in high voltage converters.

A device for transmitting control pulses is known, containing a type forcing pulses, a power thyristor trigger, an output connected to the control input of the valve, and the trigger inputs each through a separate transformer is connected to a primary pulse unit fQ.

The disadvantage of this device is the need to use two sufficiently dimensioned high-voltage isolating transformers.

The closest to the invention in technical terms is a device for controlling a high-voltage valve, containing a power RS-three ger, whose Bbixojc is intended to be connected to a control input of a high-voltage valve, and the R and 5 inputs through the corresponding threshold elements and oppositely connected diodes are connected with the first output of the secondary winding of the transformer, the primary winding of which is intended to be connected to a two-pole source of control pulses 2.

The drawbacks of the device are low noise immunity and reliability.

The aim of the invention is to improve noise immunity and reliability.

The goal is achieved by the fact that, in the first embodiment, a device for controlling a high-voltage valve, containing a power C6 trigger, the output of which is intended to be connected to the control input of a high-voltage valve, and R, and 5 inputs through the corresponding threshold elements and oppositely connected The diodes are connected to the first output of the secondary winding of the transformer, the primary winding of which is intended to be connected to a two-pole source of control pulses, equipped with an OR-NOT element, a one-shot and with thermistor, wherein the second terminal of the secondary winding of the transformer is connected through a triac obpdam wire device, a control electrode of the triac via a monostable multivibrator and a NOR element is connected to the outputs of the threshold elements.

According to the second variant, a device for controlling a high voltage valve, containing a power R5 trigger, the output of which is intended to be connected to a control input of a high voltage valve, and R - and 5 inputs through corresponding threshold elements and oppositely connected terminals connected to the secondary winding of the transformer primary winding which is intended to be connected to a two-source source with a control pulse, equipped with two one-oscillators and two thyristors, and the thyristors are connected to a common wire th device and the inputs of the threshold elements in accordance with the respective diodes, each control electrode of the thyristor via a monostable multivibrator connected to the output then pulling element, the second input connection to the other thyristor. FIG. 1 and 2 are diagrams of variants of the device; FIG. 3 diagrams we show the operation of the device. The device (Fig. 1) contains a source of primary pulses 1, a transformer 2 connected via diodes 3 and 4, and threshold elements 5 and 6 connected to the inputs of the R5 trigger 7, the output of which is connected to the control input of the high-voltage valve 8, in series with The secondary winding of transformer 2 is connected to triac 9, charged by element 10 OR NOT through one-shot 11. In the device (Fig. 2), instead of a triac 9 controlled by element 10 through the one-shot 11, thyristors 12 are connected to the inputs of the threshold elements. 1) works next shimm way. Prior to the arrival of the control pulse from source 1, the triac 9 receives a switch-on signal from the output of one vibrator. In the moment of arrival of the positive control pulse of Fig. 634 (V in Fig. 3), the triac 9 is turned on, providing a flow of control current that triggers through the threshold element R5-trigger 7. At the same time, the 11 vibrator (V, Fig. 3) is triggered through the element 10 ), which removes the turn-on signal from the triac 9 for the duration of the transient processes in the secondary winding of the transformer (V, Fig. 3). As a result, the inclusion of the triac and the reset of the R5 trigger by interfering pulses due to the interruption of the control circuit is blocked. In the device (Fig. 2), the control signal is blocked by switching on the transition process in the secondary winding of the transformer 2 of the corresponding thyristor 12, which short-circuits the rhetorical winding of the transformer for the impulse pulse. The use of the proposed device eliminates false positives of the RS-trigger 7 pT interference caused by transformer 2, and also protects the device from interference caused by switching the high-voltage valve 8, which leads to increased reliability of the device. four

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Claims (2)

1. A device for controlling a high-voltage valve, containing a power R5-trigger, the output of which is designed to connect to the control input of a high-voltage valve, and R - and 5 inputs through the corresponding threshold elements and oppositely connected diodes are connected to the first output of the secondary winding of the transformer, the primary winding which is intended for connection to a bipolar source of control pulses, characterized in that, p. In order to increase noise immunity and reliability, it is equipped with an OR-NOT element, a single-vibrator and a triac, the second terminal of the secondary winding of the transformer connected via a sym- outputs of threshold elements. Fig.! 2. Device for controlling a high-voltage valve, containing a power RS-trigger, the output of which is designed to connect to the control input of a high-voltage valve, and R - and 5 inputs through the corresponding threshold elements and oppositely connected diodes are connected to the secondary winding of the transformer, the primary winding of which is intended for connection to a bipolar source of Control Impulses, characterized in that, in order to increase the · · mechanical stability and reliability, it is equipped with two single vibrators and two t thyristors, moreover, thyristors are connected between the common wire of the device and the inputs of the threshold elements according to the corresponding diodes, the control electrode of each thyristor is connected through a single-vibrator to the output of the threshold element, the input connected to another thyristor.