Found in a 1980s documentation, this amplifier uses an integrated circuit that is not easy to obtain now as it is of the era. The circuit is intended for FI ceramic filter circuits.
This circuit was found in an old documentation from 1968. The voltage gain is 70 and the...
This notch filter or reject filter rejects signals of a certain frequency with good selectivity. The...
This circuit was found on a Radio Electronics of July 1984. It consists of a source with the 741...