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 circuit from a National Semiconductor manual from the 1980s shows how to use the LM388, a...
This circuit was found in the December 1992 Radio Electronics magazine. Range depends on optical...
In the figure we show a widely used configuration for the CA3140. The power of this circuit can be...