Apparatus and method for automatically trimming an output...

Details Apparatus and method for automatically trimming an output... Apparatus and method for automatically trimming an output...

2008-04-17

2011-12-27

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S246000

Reexamination Certificate

active

08084956

ABSTRACT:
An electronic ballast includes a microprocessor which is programmed to read a voltage value corresponding to an output of the electronic ballast, output a signal which controls an amount of power outputted by the electronic ballast in accordance with the voltage value, read an external voltage value, and select one of a trimming mode and a normal mode as an operating mode based on the external voltage value. The microprocessor is also programmed, when operating in the trimming mode, to set an internal reference value, compare the voltage value corresponding to the output of the electronic ballast with the internal reference value, trim an amount of power outputted by the electronic ballast to a resistor corresponding to an impedance of a High Intensity Discharge lamp by adjusting the signal based upon the comparison, and store a result of the signal adjustment.

REFERENCES:
patent: 5117178 (1992-05-01), Roth
patent: 7075254 (2006-07-01), Chitta et al.
patent: 7622904 (2009-11-01), Sutardja et al.
patent: 2002/0047609 (2002-04-01), Weng
patent: 2002/0190665 (2002-12-01), Sun
patent: 2004/0183463 (2004-09-01), Sun et al.
patent: 2007/0063659 (2007-03-01), Yamashita et al.
patent: 2007/0210723 (2007-09-01), Kumagai et al.
patent: 2008/0180037 (2008-07-01), Srimuang
patent: 2009/0273296 (2009-11-01), Veskovic et al.

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