SU117956A2 - Digital automatic compensator - Google Patents

Description

Basically auth. St. No. 112850 described digital automatic compensator, which contains a relay switch resistance of the divider, a null indicator and a programming switch.

The proposed compensator is a further improvement of the compensator according to ed. St. N ° 112850 and provides an increase in speed.

This is achieved by the fact that the relay resistance switch is made on high-speed polarized relays with one group of contacts, each relay being connected to the output of a memory cell consisting of a capacitor and a triode, on the grid of which on and off signals are applied.

FIG. 1 and 2, an electrical circuit diagram of a relay switch of the proposed compensator is shown in two versions.

The device contains a divider resistance relay switch, a null indicator and a programming switch.

Relay resistance / divider switch is made on high-speed polarized relays 2 with one group of contacts 3 (Fig. 1) or on trigger cells 4 (Fig. 2). In the first case, the relay 2 is blocked by means of memorizing cells switched on at the input of the relay and made up of capacitance 5 and triode 6, on the grid of which the on and off sigals are fed. In the second case, the switching cell is executed as a trigger 4, one of the outputs of which is connected to the free end of the resistance 1 of the divider, and a limiting circuit composed of two semiconductor diodes 7.

It is possible to make a memory cell on a cold cathode thyratron, or on a magnetic element, or on transistors.

In the compensator with trigger cells, you can use a programming switch on electronic tubes, tiratrons, transistors or magnetic elements.

A triode can be used as the output link of the null indicator, the input of which includes a photocell (or photoresistance) illuminated by a neon lamp switched on at the output of the null indicator amplifier.