We found this circuit in a 1997 documentation. It can be used in any common 12 V source and has two relays that disconnect the source in the event of a short circuit.
This circuit allows linear brightness control of an LED from an input voltage. The power supply must...
With this system you can disconnect phone lines in case of need for protection. The circuit is...
The integrated circuit used in this 80's mixer is the LM301A. However the circuit can be used to...