Electronic ballasts which can be connected in parallel on...

Details Electronic ballasts which can be connected in parallel on... Electronic ballasts which can be connected in parallel on...

2008-06-10

2008-06-10

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Plural load circuit systems

Plural sources of supply

C307S086000, C307S157000, C315S315000, C315S324000

Reexamination Certificate

active

07385310

ABSTRACT:
The invention relates to the supply of lamps (8″, 8′″) of at least two different lamp types, of which a first lamp type (8′″) has a wattage which is approximately a whole multiple of the wattage of a second lamp type (8″), whereby the same ballast devices (1) are used, embodied for the direct supply of the second lamp type (8″) and which may be operated in parallel for the supply of the first lamp type (8′″). The correct connection of a suitable lamp (8′, 8″, 8′″) to the ballast device (1) is monitored by means of a signal exchange between ballast device (1) and lamps (8′, 8″, 8′″) before switching on the supply line of the ballast device (1).

REFERENCES:
patent: 3141112 (1964-07-01), Eppert
patent: 5177404 (1993-01-01), Cohen et al.
patent: RE35994 (1998-12-01), Lestician
patent: 6091164 (2000-07-01), Buell
patent: 6188181 (2001-02-01), Sinha et al.
patent: 6414449 (2002-07-01), Hui et al.
patent: 6703722 (2004-03-01), Christensen
patent: 6731080 (2004-05-01), Flory
patent: 101 39 402 (2003-03-01), None
patent: 2 811 506 (2002-01-01), None
patent: 8-186041 (1996-07-01), None

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