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.
I found this circuit in a Popular Electronics from November 1999. The magazine is no longer...
This circuit was found in a 1970s documentation. The integrated circuit used is uncommon today....
This filter was found in Exar documentation from the 1980s. The circuit has an attenuation of 60 dB at the...