LED lamp with dimming function

A technology of LED lamps and functions, which is applied in the field of LED lamps with dimming function, can solve problems such as the complex drive efficiency of LED color temperature circuits, and achieve the effects of wide application range, simple circuit structure, and improved stability

Inactive Publication Date: 2019-12-24
道县龙图饰品有限公司
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Problems solved by technology

[0004] The present invention provides a bluetooth color temperature LED driving power supply for the...

Method used

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  • LED lamp with dimming function
  • LED lamp with dimming function

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0023] See attached Figure 1-Figure 2 As shown, an LED lamp with dimming function of the present invention includes a PWM signal generating circuit, the output terminal of the PWM signal generating circuit is connected to the G terminal of the field effect transistor Q1, and the D terminal of the field effect transistor Q1 end is connected to the power supply Vcc, the S end of the field effect transistor Q1 is reversely connected to the Zener diode D1, and the other end of the Zener diode D1 is grounded, and the field effect transistor Q1 is a P-channel enhanced field effect transistor The voltage regulator diode D1 is also connected in series with an inductance L a...

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Abstract

The invention belongs to the field of LED lamps and discloses an LED lamp with a dimming function. An output end of a PWM signal generation circuit is connected to a G end of a field effect transistorQ1, a D end of the field effect transistor Q1 is connected to a power supply Vcc, an S end of the field effect transistor Q1 is reversely connected with a voltage stabilizing diode D1, and another end of the voltage stabilizing diode D1 is grounded. The voltage stabilizing diode D1 is also connected in series with an inductor L and a capacitor C1. An output end of the inductor L is connected withan LED light-emitting element which is formed by connecting a plurality of light-emitting diodes in series, another end of the light-emitting element is connected to a D end of a field effect transistor Q2, a G end of the field effect transistor Q2 is connected to an input pin of a single-chip microcomputer, an S end of the field effect transistor Q2 is connected to the ground through a resistorR1, and the single-chip microcomputer is connected with the Bluetooth module. According to the LED lamp, a Buck conversion topology circuit constant-current driving mode is adopted by a driving powersupply circuit, the circuit structure is simple, the voltage stabilization effect is efficient, the parallel connection of a plurality of groups of light-emitting elements can be realized, the expansion is carried out according to needs, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of LED lamps, in particular to an LED lamp with dimming function. Background technique [0002] With the development of new semiconductor light-emitting materials and the continuous improvement of manufacturing processes and the continuous improvement of high-power LED integrated driver chips, high-brightness and high-power light-emitting diode lighting sources have gradually entered daily life due to their advantages of high efficiency, energy saving, and environmental protection. Gradually replace incandescent lamps, fluorescent lamps, etc. as new light sources in the field of general lighting. In lighting, the correlated color temperature is generally used to measure the dyeability of white light, and it is measured by the Kelvin scale (K). The color temperature range of warm white light such as incandescent lamps and warm white fluorescent lamps is 2000-4100K, and the color temperature range of cool whit...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
Inventor 毛兵忠
Owner 道县龙图饰品有限公司
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