This two-microphone amplifier was found in a April 1961 Radio Electronics Magazine. The circuit is powered by battery and has a 600-ohm line output.
The coils for this transmitter, found in a 2002 documentation, have the following characteristics: L1 - 4...
Touching the sensor with your fingers, this circuit produces a machine gun sound. The circuit must...
The MC1436 can also be used on this circuit found in Motorola's 1993 Linear Interface ICs. The...