This circuit uses a wire potentiometer, but the current is much more intense in the control thanks to the 2N3055 which must be mounted on a heat sink.
Disabling this circuit from a 2002 documentation can only be done by pressing 4 keys in a correct...
This circuit was obtained from a manual of the integrated circuit itself, but can be applied to...
This simple 2004 circuit uses a common sensor used in television and other equipment. It checks...