LED illumination device avoiding no-flux situation and color temperature switching method thereof
The present invention provides an LED illumination device and a color temperature switching method thereof. The LED illumination device includes a circuit substrate, a bridge rectifier chip, a microcontroller module, a first semiconductor switch module, a second semiconductor switch module, a first...
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| creator | LIU, PEIUN LIU, YIUN CHUNG, CHIA-TIN |
| description | The present invention provides an LED illumination device and a color temperature switching method thereof. The LED illumination device includes a circuit substrate, a bridge rectifier chip, a microcontroller module, a first semiconductor switch module, a second semiconductor switch module, a first current limiting module, a second current limiting module, and a first light-emitting module and a second light-emitting module. The microcontroller module includes a microcontroller chip. The first semiconductor switch module includes a first semiconductor switch chip for receiving a first pulse width modulation signal output from the microcontroller chip. The second semiconductor switch module includes a second semiconductor switch chip for receiving a second pulse width modulation signal output from the microcontroller chip. Therefore, when the AC power is supplied to the LED illumination device through the circuit substrate, both the first semiconductor switch module and the second semiconductor switch module a |
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| subjects | ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY |
| title | LED illumination device avoiding no-flux situation and color temperature switching method thereof |
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