MULTI-LEVEL ADAPTIVE CONTROL CIRCUITRY FOR DEEP PHASE-CUT DIMMING COMPACT FLUORESCENT LAMP

Title:

MULTI-LEVEL ADAPTIVE CONTROL CIRCUITRY FOR DEEP PHASE-CUT DIMMING COMPACT FLUORESCENT LAMP

Document Type and Number:

WIPO Patent Application WO/2013/109560

Kind Code:

A3

Abstract:

An electronic ballast has a rectifying circuit for rectifying an input voltage controlled by a phase dimmer. The electronic ballast has an averaging circuit for averaging current received from the rectifying circuit to produce a reference voltage. The electronic ballast has a control integrated circuit for providing an output current to a compact fluorescent lamp by performing a linear to logarithmic conversion of the reference current, according to a predefined conversion function.

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Inventors:

CHEN TIMOTHY (US)
SKULLY JAMES K (US)

Application Number:

PCT/US2013/021623

Publication Date:

September 19, 2013

Filing Date:

January 16, 2013

Export Citation:

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Assignee:

TECHNICAL CONSUMER PRODUCTS INC (US)

International Classes:

H05B41/392

Foreign References:

US20020033679A1	2002-03-21
US20030080696A1	2003-05-01
US20020140373A1	2002-10-03

Attorney, Agent or Firm:

GECOVICH, Edward (LLP200 Public Square,21st Floo, Cleveland OH, US)

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