This common dimmer configuration is one of thousands that have appeared in electronics publications around the world. This one with a triac was found in October 1977 Radio Electronics magazine.
This circuit has the transistor chosen according to the maximum current desired at the output. Unlike...
We found this configuration with CMOS-compatible output in the 1994 National Semiconductor Linear...
This very low frequency amplifier has a gain of 1,000 and was found in a 1967 documentation. The circuit is...