This 1968 Mallory circuit uses an uncommon integrated circuit today. The circuit has a 30 to 20,000 Hz response with lower power and is powered by 12 V.
This modulator circuit is nothing more than an audio amplifier that serves to modulate amplitude...
This Hartley-type audio oscillator was obtained in an earlier 1973 publication. It can be...
The circuit shown bellow is gated by an external signal. A high logic level applied to the input...