Driving circuits and controllers for controlling power to a...

Details Driving circuits and controllers for controlling power to a... Driving circuits and controllers for controlling power to a...

2008-08-18

2011-11-01

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Plural load device regulation

C315S2090SC, C315S210000, C315S212000, C315S291000, C315S294000, C315S307000, C315S312000

Reexamination Certificate

active

08049438

ABSTRACT:
A driving circuit for driving loads includes a switch circuit, a transformer, a current sensing circuit, and an inverter controller. The switch circuit and the transformer are used for converting a DC electric power to an AC electric power so as to energize the loads. The current sensing circuit coupled to the loads generates a feedback current signal indicative of a current flowing through the loads. The inverter controller includes a switch drive circuit, a current regulation circuit receiving the feedback current signal, and a mode controller circuit. The switch drive circuit controls the switch circuit so as to adjust power delivered to the primary winding of the transformer in accordance with the feedback current signal. The mode controller disables the switch circuit through the switch drive circuit if the external signal is in an absence state for a predetermined period.

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patent: 100486095 (2007-01-01), None
patent: 2008006024 (2008-01-01), None

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