This oscillator was found in a 70s RCA linear circuit manual. The oscillator makes use of an integrated device from the time, difficult to find today.
Two tone siren (CB9085E) This circuit was found in a 1980’s Radio Electronics. The signal must be...
This circuit switches the brightness of the LED. We found it in an English documentation....
This circuit, found in a 1989 publication, only works with incandescent lamps. The maximum power...