This circuit, which appears in other versions on this website, was obtained in old documentation. The load of each PUT depends on its characteristics. The circuit is low frequency.
This circuit encodes the two channel signals from an amplifier for a multiplex-stereo...
This radio for the medium wave band was found in an old American documentation. The transistors are made...
This lock-up alarm circuit was found in a 1990s Radio Electronics magazine. The sensors are...