Based on an OTA LM3600 operational amplifier, this circuit was found in the July 1988 issue of Radio Electronics magazine. The range is 6 Hz to 6 kHz and can be changed.
This radio for the AM band has the traditional superheterodyne configuration with several...
Found in Linear Technology documentation from the 1980s, this generator uses integrated circuits...
This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit...