Switching control for inverter startup and shutdown

Details Switching control for inverter startup and shutdown Switching control for inverter startup and shutdown

2008-01-01

2008-01-01

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

With automatic shunt and/or cutout

Supply circuit current and/or potential actuated switch

C315S119000, C315S225000, C315S240000, C315S2090SC, C315S224000, C315S238000, C315S278000, C363S018000, C363S098000, C363S056050, C363S050000

Reexamination Certificate

active

11645939

ABSTRACT:
An electronic ballast circuit for a lamp is described, wherein the ballast comprises a power factor correction circuit coupled to an inverter circuit. The inverter circuit is further coupled to a trigger circuit, which is in turn operatively connected to a hot or neutral line of a power supply by a control line. Upon closing a switch in the control line, the trigger circuit operates to place a capacitor in parallel with a base drive winding of a transistor in the inverter circuit, causing the inverter circuit to shut down. When the switch is opened, the trigger circuit shuts off and the inverter starts up and returns to an oscillating state.

REFERENCES:
patent: 4503363 (1985-03-01), Nilssen
patent: 4507698 (1985-03-01), Nilssen
patent: 4896079 (1990-01-01), Tabor
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patent: 6137233 (2000-10-01), Moisin
patent: 6204614 (2001-03-01), Erhardt
patent: 6222326 (2001-04-01), Moisin
patent: 6507157 (2003-01-01), Erhardt et al.
patent: 6819057 (2004-11-01), Alexandrov

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