This circuit is from a 1990 Philips Databook. The circuit uses a symmetrical source and power from 15 to 40 V. Performance information is given in the table below.
The diagram shows a tone control with the LM381 IC. The circuit is from a Radio Electronics from...
Very simple, this radio control circuit for short distances was found in an Electronic Design from...
From an article in Radio Electronics magazine, May 1989, this circuit requires a dual power...