This midrange filter for sound systems was found in the May 1988 issue of Radio Electronics magazine. The circuit is based on a dual amplifier that must be powered by a symmetrical source.
This circuit is from a 90s Popular Electronics. The integrated circuit is from that time. The...
This powerful amplifier with output in complementary symmetry is from an old documentation....
This two-transistor circuit was found in a 1966 US documentation. The power transistors are of the...