Two-wired LED light adjusting system
First Claim
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1. A two-wired LED (Light-Emitting Diode) light adjusting system for adjusting light of an LED lamp module, comprising:
- a phase modulating circuit, coupled to an alternating current (AC) power source, for generating a phase modulating voltage, wherein the phase modulating circuit partially restrains AC power received from the AC power source for a waveform of the phase modulating voltage to comprise a non-conduction angle;
a rectifying circuit, coupled to the phase modulating circuit and the AC power source for rectifying the phase modulating voltage so as to generate a DC (direct current) voltage;
an LED driving circuit, coupled to the LED lamp module and the rectifying circuit, for driving the LED lamp module according to the DC voltage; and
a controller, coupled between the phase modulating circuit and the LED driving circuit, for controlling the LED driving circuit to drive the LED lamp module according to the non-conduction angle of the waveform of the phase modulating voltage.
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Abstract
A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.
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Citations
10 Claims
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1. A two-wired LED (Light-Emitting Diode) light adjusting system for adjusting light of an LED lamp module, comprising:
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a phase modulating circuit, coupled to an alternating current (AC) power source, for generating a phase modulating voltage, wherein the phase modulating circuit partially restrains AC power received from the AC power source for a waveform of the phase modulating voltage to comprise a non-conduction angle; a rectifying circuit, coupled to the phase modulating circuit and the AC power source for rectifying the phase modulating voltage so as to generate a DC (direct current) voltage; an LED driving circuit, coupled to the LED lamp module and the rectifying circuit, for driving the LED lamp module according to the DC voltage; and a controller, coupled between the phase modulating circuit and the LED driving circuit, for controlling the LED driving circuit to drive the LED lamp module according to the non-conduction angle of the waveform of the phase modulating voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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