Circuit unit

Details Circuit unit Circuit unit

2007-06-05

2011-10-25

Le, Don (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S297000

Reexamination Certificate

active

08044607

ABSTRACT:
The invention relates to a circuit unit for a semiconductor unit which produces radiation, with a forward voltage Ufbeing applied during operation to the semiconductor unit which produces radiation, and with a forward current Ifflowing through the semiconductor unit which produces radiation, with the circuit unit regulating the forward current Ifsuch that an actual value Vactwhich depends on the forward current Ifand the forward voltage Ufassumes a predetermined nominal value Vnom. The invention also relates to a radiation source.

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patent: 6791283 (2004-09-01), Bowman et al.
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patent: 2003/0076051 (2003-04-01), Bowman et al.
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patent: 2005011895 (2005-01-01), None
patent: WO 2004/057924 (2004-07-01), None
patent: WO 2005/039251 (2005-04-01), None
“LT1615 Micropower Step-up DC/DC Converters in ThinSOT”, 1998, Linear Technology Corp., Milpitas, CA, USA, XP002451184.
Dave Kim: “Design Note 231, Tiny Regulators Drive White LED Backlights” 2000, Linear Technology Corp., Milpitas, CA, USA, XP002451185.

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