Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent
1996-02-13
1998-03-24
Fleming, Fritz
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
307 38, H02J 300
Patent
active
057319472
ABSTRACT:
A first power plug for inserting in a wall outlet and a tapping table consisting of more than one outlet for accepting power plugs of slave units are connected by an electric cord, a switch is provided in the cord, the switch is ON/OFF controlled by a switch control means which detects through a second power plug connected with a service outlet of a master electronic equipment power voltage provided in parallel with power voltage to be supplied to the master electronic equipment; the switch control means controls whether to provide slave units connected with outlets of the tapping table with power supply voltage when the master electronic equipment is energized.
REFERENCES:
patent: 3416001 (1968-12-01), Fistell
patent: 5120983 (1992-06-01), Samann
patent: 5424903 (1995-06-01), Schreiber
patent: 5563455 (1996-10-01), Cheng
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