We found this circuit in a 1964 Electronic Design. The triac and SCR can be replaced with modern equivalents according to the load. The circuit is for 160V network.
This circuit is from Radio Electronics. The magazine no more exists, but the circuit can be...
This is a basic and operational voltage comparator circuit. The circuit has voltages determined by the...
This signal injector circuit, an astable multivibrator, was found in a 1971 magazine. The circuit can...