Found in a 1969 EEE, this circuit is based on an operational amplifier of the time and on old type MOSFETs. The components support modern equivalents.
This is a basic version of the Tesla coil that does not use semiconductor devices, found in an old...
This low noise, low frequency instrumentation circuit was found in a 1976 NASA circuit manual. The...
This circuit already explored in several diagrams in this section was found in a 90’s Popular...