Dimmer circuit for LED

Details Dimmer circuit for LED Dimmer circuit for LED

2006-09-05

2006-09-05

Vu, David (Department: 2828)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C323S905000

Reexamination Certificate

active

07102902

ABSTRACT:
The AC output from a source is rectified and applied to a resistor/Zener diode circuit connection which determines the magnitude of the rectified voltage applied via a circuit to a first MOSFET device. The inverted output of the first MOSFET device is applied to the gate electrode of a second MOSFET device in a manner such that the second MOSFET device is ON even when the AC output passes through zero. The output of the second MOSFET device is connected to a resistor which determines the magnitude of the load applied to the dimmer.

REFERENCES:
patent: 5629607 (1997-05-01), Callahan et al.
patent: 5661645 (1997-08-01), Hochstein

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