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US-12135922-B2 · Nov 5, 2024 · US
Variable power dimming control circuit
US8941328B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8941328-B2 |
| Application number | US-201313927323-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2013 |
| Priority date | Apr 26, 2013 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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Abstract
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Disclosed is a variable power dimming control circuit for driving and linearly adjusting the illumination brightness of a plurality of light emitting diodes (LEDs), and the circuit includes a dimming stabilization unit and a control unit. The control unit is provided for detecting an input current of a circuit, and the dimming stabilization unit is driven for outputting a holding current when the input power is smaller than a standard, and stopping the output the holding current when the input power is greater than the standard. When the LEDs are dimmed to low luminance, a chip controls the operation of the dimming stabilization unit to assure the stability of the dimming operation of a TRIAC. When the LEDs are adjusted to high or full brightness, the chip stops the output of the holding current to reduce unnecessary power consumption and enhance the overall circuit performance effectively.
First claim
Opening claim text (preview).
What is claimed is: 1. A variable power dimming control circuit, for driving and linearly adjusting the illumination brightness of a plurality of light emitting diodes (LEDs) and the LEDs being electrically connected in series with each other or installed in parallel with each other on a light board module, comprising: a dimming unit, electrically coupled to an external power supply; a rectification unit, electrically coupled to the dimming unit, for receiving and rectifying an…
Assignees
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Classifications
- H05B45/10Primary
Electricity · mapped topic
- H05B33/0845Primary
Electricity · mapped topic
- H05B45/3725Primary
Electricity · mapped topic
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8941328B2 cover?
- Disclosed is a variable power dimming control circuit for driving and linearly adjusting the illumination brightness of a plurality of light emitting diodes (LEDs), and the circuit includes a dimming stabilization unit and a control unit. The control unit is provided for detecting an input current of a circuit, and the dimming stabilization unit is driven for outputting a holding current when t…
- Who is the assignee on this patent?
- Unity Opto Technology Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H05B45/10. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).