SU843131A1 - Device for shaping control pulses for thyristors - Google Patents

Description

(54) DEVELOPMENT FOR FORMING THE TYRISTOR MANAGEMENT ISULES

before and Ejj, and after the launch of the de sngngal launch, the first impulse on the load will be at an amplitude two times smaller than the subsequent ones, which leads to damage to the thyristors.

The goal of acquiring is reliability.

The goal is achieved by the fact that the device for forming the pulse control thyristors is equipped with a control key and a charging current sensor, the charge current sensor being connected between the DC voltage source and current limiting elements, the output of the sensor is connected to the input of the control key, the output which is connected to a cohorting key

Fng, 1 is a block diagram of a device for generating thyristor control pulses; on - an electrical circuit of this device.

The device contains a forg-eating t-shnk 1, a current-limiting element 2, which is injected with a key 3, a load 4, a forward key e 5 key, made in vi, the center of the sensor (Fig. 2), the sensor b charging current, made in the form of a current transformer (Fig. 2), under a CL to the source of a constant voltage, eg.

The device works as follows.

During the charging of the forming line 1, the charging current ijoip is converted by the sensor b into a signal and the supply signal is supplied to the input of the control key 5 which bypasses the trigger signal with interference t pulses generated at this time, the key 3 does not open and the poor quality pulse on load U does not form. With a high sensitivity controlled key 5, i.e.

oh, almost overlap

pore

all recovery time (t

ban

Restoration of the danger zone, and in the presence of interference during the charging of the forming line, poor-quality pulses on the load are not formed.

In this way. The effect is to increase the device reliability by increasing the noise immunity of the device and eliminating the appearance of poor quality control pulses when a trigger signal appears with interference pulses during the charging of the forming line due to the introduction of an armature current and a controlled key into the sensor device.

Claims (1)

1.Itshoki LS and others. Pulse and digital devices. M., Soviet Radio, 1972, pp. 141-143, fig.23. 2, ibid., P. 143-145, fig. -about additional Va-k UN ffiam f.