This General Electric circuit, in a documentation from the 1960s, allows the use of high resistance resistive sensors with unijunction transistors in a relaxation oscillator.
This simple circuit serves to demonstrate the working principle of a Set-Reset flip-flop (S-R or...
This circuit interrupts the power supply when grounding is missing. The circuit is from an old...
This circuit originally came out in a Budget Electronics from 1981. The American magazine no...