This immobilizer circuit for vehicles was found in a 80’s Hands On Electronics. The circuit shortens the platinum to prevent its operation and thus the operation of the engine when started.
This three-transistor amplifier uses a JFET at the input to increase the input impedance. The...
This two-transistor MW radio was found in a publication from 1958. It uses one of the oldest type...
This simple circuit was suggested by the Electronics Handbook Volume XIII 1993. LED D1 emits light for...