Insulation detection power supply and electronic ballast

Details Insulation detection power supply and electronic ballast Insulation detection power supply and electronic ballast

2007-08-17

2009-12-22

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

C315S105000, C315S119000

Reexamination Certificate

active

07635953

ABSTRACT:
A power supply for an insulation detector having a heating element and a temperature sensitive switch thermally coupled to the heating element, the power supply including a power circuit120operable to provide heating element power102to the heating element32; a short protector108operably connected to the power circuit120to monitor current flow through the heating element32; and an insulation detector sensor110operably connected to the power circuit120to monitor presence of the heating element32.

REFERENCES:
patent: 4740861 (1988-04-01), Droho et al.
patent: 5646484 (1997-07-01), Sharma et al.
patent: 6489729 (2002-12-01), Erhardt et al.
patent: 6838834 (2005-01-01), Okawa
patent: 7378806 (2008-05-01), Nerone
patent: 2004/0263091 (2004-12-01), Deurloo et al.
patent: 03056537 (2003-07-01), None

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