This soft start circuit was found in a 1965 General Electric documentation. The SCR and bridge diodes must be in accordance with the controlled motor's current.
This simple alarm circuit was found in the May 1990 issue of Radio Electronics magazine. The...
With this circuit, obtained from an American publication for radio amateurs in 1976, it is...
This peak indicator for stereo amplifiers uses a CA3130. The 80's circuit does not need a...