LED power circuit using discrete components and configuration method
First Claim
1. A power circuit for a light emitting diode (LED) lighting device using discrete components, comprising:
- a filtering unit configured to filter an inputted alternating current;
a rectifying unit configured to convert the alternating current to a direct current;
a transformer connected to the rectifying unit;
a first switch including a gate electrode, a drain electrode and a source electrode; and
a second switch including a gate electrode, a drain electrode and a source electrode, wherein;
the first switch and the second switch are field effect transistors;
the gate electrode of the first switch is connected to the drain electrode of the second switch;
the drain electrode of the first switch is connected to the transformer;
the source electrode of the first switch is connected to the source electrode of the second switch through a detection resistor; and
the gate electrode of the second switch is connected to the source electrode of the first switch through a thermistor.
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Accused Products
Abstract
A power circuit for an LED lighting device using discrete components is provided. The power circuit includes a filtering unit configured to filter an inputted AC and a rectifying unit configured to convert an AC to a DC. The power circuit also includes a transformer connected to the rectifying unit. Further, the power circuit includes a first switch and a second switch that are field effect transistors, wherein a grid electrode of the first switch is connected to a drain electrode of the second switch. Further, a drain electrode of the first switch is connected to the transformer. A source electrode of the first switch is connected to a source electrode of the second switch through a detection resistor. A grid electrode of the second switch is connected to the source electrode of the first switch through a thermistor.
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Citations
20 Claims
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1. A power circuit for a light emitting diode (LED) lighting device using discrete components, comprising:
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a filtering unit configured to filter an inputted alternating current; a rectifying unit configured to convert the alternating current to a direct current; a transformer connected to the rectifying unit; a first switch including a gate electrode, a drain electrode and a source electrode; and a second switch including a gate electrode, a drain electrode and a source electrode, wherein; the first switch and the second switch are field effect transistors; the gate electrode of the first switch is connected to the drain electrode of the second switch; the drain electrode of the first switch is connected to the transformer; the source electrode of the first switch is connected to the source electrode of the second switch through a detection resistor; and the gate electrode of the second switch is connected to the source electrode of the first switch through a thermistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for configuring a power circuit for an LED lighting device using discrete components, comprising:
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configuring a filtering unit to filter an inputted alternating current; connecting a transformer to a rectifying unit, wherein the rectifying unit is configured to convert the alternating current to a direct current; and configuring a first switch including a gate electrode, a drain electrode and a source electrode and a second switch including a gate electrode, a drain electrode and a source electrode, wherein; the first switch and the second switch are field effect transistors; the gate electrode of the first switch is connected to the drain electrode of the second switch; the drain electrode of the first switch is connected to the transformer; the source electrode of the first switch is connected to the source electrode of the second switch through a detection resistor; and the gate electrode of the second switch is connected to the source electrode of the first switch through a thermistor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification