US Patent No. 10,172,207

ADJUSTABLE LIGHT COLOR TEMPERATURE SWITCHING CIRCUIT


Patent No. 10,172,207
Issue Date January 01, 2019
Title Adjustable Light Color Temperature Switching Circuit
Inventorship Kevin Hsu, Taichung (TW)
Assignee Dong Guan Bright Yinhuey Lighting Co., Ltd., Guang Dong (CN)

Claim of US Patent No. 10,172,207

1. A circuit comprising:an input module;
a drive power supply connected with the input module;
a regulating switch module connected with the drive power supply;
a control module connected with the drive power supply and the regulating switch module; and
an LED module connected with the regulating switch module, wherein:
the drive power supply includes an output terminal and a grounding terminal;
the regulating switch module includes a first regulating switch, a second regulating switch and a third regulating switch;
each of the first regulating switch, the second regulating switch and the third regulating switch has an input terminal, an output terminal and a control terminal;
the input terminal of each of the first regulating switch, the second regulating switch and the third regulating switch is connected with the output terminal of the drive power supply;
the control module includes a control chip;
the control chip includes three signal terminals, a power supply terminal and a grounding terminal;
the three signal terminals of the control chip are respectively connected with the control terminal of the first regulating switch, the control terminal of the second regulating switch and the control terminal of the third regulating switch;
the LED module includes at least one first LED, at least one second LED and at least one third LED;
the at least one first LED is a warm light type LED;
each of the at least one second LED and the at least one third LED is a cold light type LED;
each of the at least one first LED, the at least one second LED and the at least one third LED includes an input terminal and a grounding terminal; and
the input terminal of the at least one first LED, the input terminal of the at least one second LED and the input terminal of the at least one third LED are respectively connected with the output terminal of the first regulating switch, the output terminal of the second regulating switch and the output terminal of the third regulating switch; and wherein:
the control module further includes an inductor and a capacitors; and
the power supply terminal of the control chip is connected with the output terminal of the drive power supply through the inductor and is connected with the grounding terminal of the drive power supply through the capacitor.