Jade Sky Technologies, Inc.

David J Chen

Eugene Cheung

David C Tournatory

Methods and apparati for controlling bleed current (IBLEED) in a driver circuit () for a lighting device (). A method embodiment of the present invention comprises the steps of coupling a dimmer () to an input of the driver circuit (), and forcing the bleed current (IBLEED) to be inversely proportional to the time-averaged voltage (VLEDP) at said lighting device (). The dimmer () consumes power even when the lighting device () is not emitting light.

Control of bleed current in drivers for dimmable lighting devices

Methods and apparati for forcing the current through a load () in a variable DC electrical circuit to be proportional to the input voltage (V(in)). A circuit embodiment of the present invention comprises a source () of input AC; a rectifier () coupled to the input AC source (), said rectifier () producing a variable DC input voltage; coupled to the rectifier (), a load () having a variable direct current flowing therethrough; and means (-) for forcing the current through the load () to be proportional to the variable DC input voltage.

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San Jose, CA, United States of America

David J Chen