Archive for the 'phase' Tag

MEOPTA 87328 16mm projector supply



Description: A 1200 VA transformer-based power supply.
Manufacturer: MEOPTA
Made in year(s): 1965 mine model
Country of origin: Czechoslovakia
Status: Working… [read more]

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]