LED DECORATIVE LIGHT
First Claim
1. An LED decorative light comprising:
- a DC power supply, a main controller, and a plurality of LED light chains, said main controller including a key switch, a crystal oscillating access circuit, and a main control chip, wherein said key switch and said crystal oscillating access circuit is connected to said main control chip respectively;
wherein a pulse width modulation end of said main control chip outputs a variable duty ratio PWM, said crystal oscillating access circuit used to provide an instruction cycle required for said main control chip;
wherein said key switch is used to control an operating state of said main control chip;
wherein said main controller also includes a voltage adjustment circuit, used to adjust the DC power supply voltage to a value required for the plurality of LED light chains, with an input end of the voltage adjustment circuit connected to said DC power supply, a control end connected to the pulse width modulation end of said main control chip, and an output end connected to a LED light chain input end.
1 Assignment
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Accused Products
Abstract
LED decorative light comprising DC power supply, main controller, and LED light chains; said main controller consists of key switch, crystal oscillating access circuit, and main control chip, with said key switch and crystal oscillating access circuit connected to said main control chip respectively; said main control chip pulse width modulation end outputs variable duty ratio PWM; said crystal oscillating circuit is used to provide instruction cycle required for main control chip; and said key switch is used to control operating state of main control chip; wherein said main controller also includes a voltage adjustment circuit, used to adjust DC power supply voltage to the value required for LED light chains, with input end of this circuit connected to said DC power supply, its control end connected to pulse width modulation end of said main control chip, and its output end connected to LED light chain input end.
11 Citations
11 Claims
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1. An LED decorative light comprising:
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a DC power supply, a main controller, and a plurality of LED light chains, said main controller including a key switch, a crystal oscillating access circuit, and a main control chip, wherein said key switch and said crystal oscillating access circuit is connected to said main control chip respectively; wherein a pulse width modulation end of said main control chip outputs a variable duty ratio PWM, said crystal oscillating access circuit used to provide an instruction cycle required for said main control chip; wherein said key switch is used to control an operating state of said main control chip; wherein said main controller also includes a voltage adjustment circuit, used to adjust the DC power supply voltage to a value required for the plurality of LED light chains, with an input end of the voltage adjustment circuit connected to said DC power supply, a control end connected to the pulse width modulation end of said main control chip, and an output end connected to a LED light chain input end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification