This circuit cuts the audio for a few seconds between words, which allows ads to be detected, since this does not occur in music. The circuit is a from Radio Electronics Experimenter from 1989.
This speed control for motors up to 500 mA was obtained in an old European documentation, but it...
This simple amplified relay circuit works on RF signals. The power supply is according to the...
This circuit is from the 1982 SGS linear integrated circuit manual. The LS776 is not common today,...