Dimmer adaptable to either two or three active wires

Details Dimmer adaptable to either two or three active wires Dimmer adaptable to either two or three active wires

2008-02-26

2009-10-27

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

C315S224000, C315S272000, C315S291000, C315S352000

Reexamination Certificate

active

07609007

ABSTRACT:
A dimmer (42) adaptable to either two (H, DH) or three (H, N, DH) active wires includes a first full-wave rectifier (D1, D2, D3, D4) across an AC power hot (H) terminal and a dimmer hot (DH) terminal and a second full-wave rectifier (D1, D4, D5, D6) across the AC power hot (H) terminal and an AC power neutral (N) terminal. The dimmer (42) operates in a two-wire configuration by drawing power through a load (13) when a control circuit (422) is not conducting or in a three-wire configuration, when the AC power neutral (N) terminal is connected, by drawing power from AC power hot (H) and AC power neutral (N) terminals.

REFERENCES:
patent: 4728866 (1988-03-01), Capewell
patent: 4876498 (1989-10-01), Luchaco
patent: 5430356 (1995-07-01), Ference
patent: 6091205 (2000-07-01), Newman
patent: 2005/0275354 (2005-12-01), Hausman et al.
patent: 2006/0255745 (2006-11-01), DeJonge
patent: 2007/0001654 (2007-01-01), Newman, Jr.
patent: 2007/0285027 (2007-12-01), Gehman
patent: 2008/0024074 (2008-01-01), Mosebrook et al.
patent: 2008/0111501 (2008-05-01), Dobbins et al.
patent: 2009/0039854 (2009-02-01), Blakeley
patent: 2009/0108765 (2009-04-01), Weightman et al.

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