We found this circuit in the February 1987 issue of Radio Electronics magazine. It is based on an integrated RCA triac trigger available at the time. The circuit powers 4 incandescent lamps.
The purpose of this receiver is to monitor the signal from a nearby transmitter. It was published in an...
This suggested application of the integrated 78xx voltage regulators is from one of the many...
Presented as an electronic siren, this circuit was found in Radio Electronics magazine from June...