This circuit, very critical due to the frequency at which it operates, was found in an American documentation that uses a resonant cavity in a beer can. The transistor can be of any type for RF.
The circuit shown with the LM3914 was found in the March 1992 issue of Radio Electronics magazine. The...
This circuit was obtained from an English magazine from 1976. The circuit activates a sensitive relay...
The 8038 integrated circuit consists of a function generator with outputs of three waveforms. It...