Based on the LF256 operational amplifier, this circuit was found in the September 1989 issue of Radio Electronics magazine. The indicator is analog, and the power supply must be symmetrical.
This circuit can reduce the voltage of a source by providing regulated adjustable output. The...
Found in a 1992 book, this circuit is intended for operation with audio signals. Equivalent...
This circuit was found in a 90's RF Design. The circuit employs an integrated of the time. The 56 to...