This circuit was obtained from the October 1977 Radio Electronics magazine. The meter is analog, and the maximum selected power is 100W.
This basic circuit was found in the March 1998 issue of Electronics Now magazine. The circuit is...
This buzzer trigger can be used for small alarms. We find it in an 80’s American documentation. The...
This simple circuit was obtained from Popular Electronics in December 1990. The magazine no longer...