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 circuit was obtained in a 1990 documentation and can be powered by the previous circuit...
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....
This oscillator with different outputs has frequencies selected by the S2 switch in 3 bands. We...