Archive for the 'thyristor' Tag

Triac phase regulator

This circuit, also informally known as the poor man’s variac, is used in many applications in both consumer and industrial electronics, where a perfectly sinusoidal waveform is not required and a real variac (variable autotransformer) would be too heavy and bulky. This is the case of light dimmers, vacuum cleaners, motor speed control, heater elements and similar. It was… [read more]