LED Lamp And Driving Apparatus For The Same
First Claim
1. An LED lamp driving apparatus electrically connected between a utility input voltage and at least one LED, comprising:
- an input rectifying/filtering unit that receives the utility input voltage;
an isolated power inverter that is electrically connected to the input rectifying/filtering unit to receive an output of the input rectifying/filtering unit to generate an a buck A.C.; and
an output rectifying/filtering unit that is electrically connected to the isolated power inverter to receive the buck A.C. of the isolated power inverter and then to rectify and filter the buck A.C. into an output D.C. voltage.
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Accused Products
Abstract
An LED lamp including at least one LED is electrically connected to a utility input voltage. A driving apparatus located inside a lamp holder of the LED lamp includes an input rectifying/filtering unit to accept the utility input voltage; an isolated power inverter electrically connected to the input rectifying/filtering unit to generate an a buck A.C.; an output rectifying/filtering unit electrically connected to the isolated power inverter to generate an output D.C. voltage to drive the at least one LED. The components of the driving apparatus could be located inside the LED lamp, and the components can provide an isolation protection against the utility input voltage. The driving apparatus can more precisely control output D.C. voltage, current, and power as output D.C. voltage and current signals sent from the output rectifying/filtering unit are feedbacked to a photo coupler signal feedback unit.
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Citations
11 Claims
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1. An LED lamp driving apparatus electrically connected between a utility input voltage and at least one LED, comprising:
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an input rectifying/filtering unit that receives the utility input voltage; an isolated power inverter that is electrically connected to the input rectifying/filtering unit to receive an output of the input rectifying/filtering unit to generate an a buck A.C.; and an output rectifying/filtering unit that is electrically connected to the isolated power inverter to receive the buck A.C. of the isolated power inverter and then to rectify and filter the buck A.C. into an output D.C. voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An LED lamp receiving an utility input voltage, comprising:
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a metal lamp cup; a lamp holder that is connected to the metal lamp cup; at least one LED located inside the metal lamp cup; and a driving apparatus located inside the lamp holder, comprising; an input rectifying/filtering unit that receives the utility input voltage; an isolated power inverter that is electrically connected to the input rectifying/filtering unit to receive an output of the input rectifying/filtering unit to produce an a buck A.C.; and an output rectifying/filtering unit that is electrically connected to the isolated power inverter to receive the buck A.C. of the isolated power inverter and then to rectify and filter the buck A.C. into an output D.C. voltage to drive the at least one LED. - View Dependent Claims (8, 9, 10, 11)
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Specification