This anti-theft circuit was found in a 1985 documentation. It uses common components that can still be found easily. The relay is 12 V and the circuit has timings of 3 minutes and 20 seconds.
This circuit can be used in a single optical link or optical communication system and even using an...
This circuit was found in an old Motorola documentation from the 70s, as it uses one of its...
Found in a 90s 73 magazine, this circuit provides an output of 1.5 A with 24 V from a 12 V source....