This circuit uses common components at the time of its publication in the 1980s. The circuit can be made with modern equivalent transistors. The input signal is sinusoidal.
Indicated for applications with a PC, this circuit was found in an English documentation from...
This circuit was published in a 90s Radio Electronics. The circuit uses the well-known LM386 that...
This dimmer, from an old publication, can use almost any triac and in shooting a neon lamp. The...