Patent ID: 9300160
Filing Date: 2016-03-29
CPC Classification: H02J

Claim Text:
1. A charger or power source for an appliance, which appliance is energized or charged by application of voltage to the appliance, said charger or power source comprising: a power mains socket having contacts for connecting the charger or power source to a power mains plug electrically connected to a power mains; a transformer having a primary winding and a secondary winding, and an electrical connection between a first side of the primary winding and a first power mains socket contact; an appliance socket having contacts for connecting the secondary winding of the transformer to an appliance plug, wherein an electrical connection between a second power mains socket contact and a second side of the primary winding is routed through said appliance socket and said appliance plug such that the primary winding of the transformer cannot be energized unless the appliance plug is coupled to the appliance socket.