Found in a Hands On Electronics from the 80's this circuit allows the reading of low resistances in a common multimeter. The circuit consists of a constant current source.
This oscillator was found in a 1967 General Electric documentation. The UJT is P-channel, an unusual...
This is the receiver circuit for the previous transmitter. The circuit has a programming key to...
I found This circuit is in a documentation of transistors from 1958. It uses germanium PNP...