In the figure we have a simple way to have a peak bargraph indicator. The amplifier is of the audio type, but operational ones can be used. The circuit is from Radio Electronics from March 1980.
This circuit is from National Semiconductor documentation and employs LM102 operators that are no...
This distortion circuit was found in an American publication from 1970. It can be assembled with...
This circuit consists of a Step-Down converter (voltage reducer) that can provide a 5 A output with...