This circuit turns your air conditioner or other appliance on and off in adjustable cycles to save energy. The circuit is from a 1983 Electronics Experimenter Handbook Special projects.
This amplified circuit was found in a magazine for radio amateurs 73 of the 90s. The circuit uses an...
We found this circuit in a 1980s publication on espionage. The transistors support modern...
This 6-transistor receiver was manufactured in Japan in the 60s. The circuit is superheterodyne and has a 6V...