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.
This circuit adapts a high impedance microphone to the input of a low impedance or medium...
Originally this circuit is from an English magazine, but I found it in Argentina's Radio Chassis...
We found this circuit in the February 1987 issue of Radio Electronics magazine. It is based on an...