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 with a bargraph scale was found in a 90s Popular Electronics. The circuit measures...
This circuit with only one transistor was obtained in an old English documentation and can be...
This small transmitter that we found in a 1988 documentation, has a range that depends on the...