AC voltage regulation includes direction and size.

Direction: AC input voltage? When point A is positive, 4 is turned off, and when the trigger pulse of 1 comes, DC voltage can be output;

A yes? Negative value, 1 off, when the trigger pulse of 4 comes, can it be output? Negative voltage;

Size: The non-conducting range of thyristor under the action of positive anode voltage is called the control angle, which is represented by the letter A, and the conducting range is called the conducting angle, which is represented by the letter θ. Obviously, controlling the angle α can change the cutting area of positive and negative half-cycle waveforms. The smaller a is, the smaller the cutting waveform area is and the larger the average output AC voltage is. On the contrary, when the angle α is larger, the cutting waveform area is larger and the average output AC voltage is smaller.

So what? AC voltage regulation can be performed.

The purpose, of course, is to control production? The magnitude of voltage