The transistors of this circuit found in a 1965 magazine can be the BC558 and the sensitive 12 V x 50 mA relay. The other components are common.
Devices Feature Open Immobilizer Protocol for Interoperability and Low Frequency Vector Techniques for...
This simple test circuit was found in the April 1983 issue of Radio Electronics magazine. The...
We found this circuit in a 1967 Electronic design. However, it can be easily implemented even...