A simple voltage regulator for 127 and 220 volts on a thyristor. Scheme, description

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A simple voltage regulator for 127 and 220 volts on a thyristor. Encyclopedia of radio electronics and electrical engineering

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The device, the circuit of which is shown in the figure, can be used to regulate the voltage on the load of an active and inductive nature, powered by an alternating current network with a voltage of 127 and 220 V. The voltage on the load can be changed from zero to the rated voltage of the network.

A simple voltage regulator for 127 and 220 volts on a thyristor. Voltage regulator circuit

Thyristor D5, included in the diagonal of the bridge, composed of diodes D1-D4, plays the role of a controlled key, which opens when the capacitor C1 is discharged through the limiting resistor R2 and the thyristor control transition when the switching diode D6 is turned on. The voltage at which the thyristor turns on can be adjusted by potentiometer R1. Instead of switching diode D6, you can use a zener diode, but in this case, the voltage adjustment range at the load is reduced.

Publication: cxem.net

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Comments on the article:

Georgy Fedorovich
In the voltage regulation circuit 127 and 220 V. the data of the variable resistor and diode without a number are not indicated. It's good that the value of the diode d5 has already appeared, but R1?

Mikola
Georgy Fedorovich In the voltage regulation circuit 127 and 220 V. the data of the variable resistor without a number is not indicated.

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