This circuit was obtained in a Hobbyst Handbook from 1990. The circuit can be easily assembled since the SCR can be a TIC106 and the transistor a 2N30555.
This car alarm was found in an American '80s documentation. The circuit automatically activates...
This HeNe laser power supply was found in the March 1989 issue of Radio Electronics magazine. This...
We found this circuit in the November 1992 issue of Radio Electronics magazine. The circuit has...