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 receiver is intended to receive signals from the 6-meter amateur band using only three...
This AM micro-transmitter with power that can reach a few meters is from a publication from the...
The transistor can be the BD135 and this circuit, found in a 1978 publication, can be powered by...