This Star Trek red alert circuit was found in the July 1990 issue of Radio Electronics magazine. The power transistor must be equipped with a heat sink.
This low pass filter has attenuation of 5.5 dB and the frequencies depend on the values of the...
This circuit is from an old 80's linear circuit manual. The configuration can be implemented with modern...
Found in an American 1980s documentation, this circuit makes use of a sensor of the era uncommon...