This oscillator can generate 2 to 10 MHz signals and was found in an American 1980s documentation. The circuit is stable and its supply voltage is 5 V.
This continuity tester for low resistances was found in an English magazine from 1978. The circuit...
This circuit was found in an American documentation from 1969. The circuit memorizes when a...
This circuit is from a factory documentation (National Semiconductor) of the 80's. The power...