This sensor circuit for currents of the order of nanoamperes was found in an American documentation from the 1980s. The components are from that time.
This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the...
We found this guitar effects circuit in a 1997 documentation. As the components used are still...
This FM transmitter has a high power thanks to a push-pull amplifier stage at the output. The coil...