Constant-current light-emitting circuit for electronic candle
A light-emitting circuit and constant-current circuit technology, which is applied in the layout of electric lamp circuits, electric light sources, light sources, etc., can solve the problems of not meeting the needs of energy-saving social development and short lighting duration, and achieve LED lighting with long duration and simple structure. , Reasonable design effect
Pending Publication Date: 2012-12-26
NANTONG YA TAI CANDLE ARTS & CRAFTS
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Problems solved by technology
[0002] Most of the electronic candles in the prior art are powered by dry batteries. When the electronic candle is just used, the light is very bright, but as the use time becomes longer, the light gradually dims until the power is exhausted. At the same time, due to the selection of LED lights, the light The duration is short and cannot meet the needs of energy-saving social development
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[0011] The present invention will be further described below in conjunction with specific embodiment:
[0012] An electronic candle constant current light emitting circuit as shown in the accompanying drawing includes a constant current circuit and a light emitting circuit. The input terminal of the constant current circuit is connected to the power supply through the inductor L1, the power supply voltage range is 3-6V, and the output of the constant current circuit end is connected with the input end of the light-emitting circuit; the constant-current circuit includes a constant-current transistor U1, an electrolytic capacitor C1 and an adjustable resistor R1, and the output terminal 3 of the constant-current transistor U1 is respectively connected with an electrolytic capacitor C1 and an adjustable resistor R1, and the light-emitting circuit includes The blinking timing module U2 and the LED light, the output terminal Vout of the blinking timing module U2 is connected to ...
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The invention discloses a constant-current light-emitting circuit for an electronic candle, comprising a constant-current circuit and a light-emitting circuit. The input end of the constant-current circuit is connected with a power supply through an inductor L1, and the output end is connected with the input end of the light-emitting circuit; the constant-current circuit comprises a constant-current transistor U1, an electrolytic capacitor C1 and an adjustable resistor R1; and the light-emitting circuit comprises a flickering timing module U2 and an LED (light-emitting diode) lamp. The work principle of the constant-current light-emitting circuit for the electronic candle is as follows: constant current is supplied to the LED lamp, and the brightness of the LED lamp is adjusted by the adjustable resistor R1. The constant-current light-emitting circuit for the electronic candle is simple in structure and reasonable in design, can output constant current under the condition of wide input voltage and can effectively ensure that the LED lamp keeps the same brightness all the way under the condition that the voltage is low and has long light duration.
Description
technical field [0001] The invention belongs to the technical field of electronic circuits, in particular to an electronic candle constant current light emitting circuit. Background technique [0002] Most of the electronic candles in the prior art are powered by dry batteries. When the electronic candle is just used, the light is very bright, but as the use time becomes longer, the light gradually dims until the power is exhausted. At the same time, due to the selection of LED lights, the light The duration is short and cannot meet the needs of energy-saving social development. Contents of the invention [0003] Purpose of the invention: The purpose of the invention is to solve the deficiencies of the prior art, and provide an electronic candle constant current light-emitting circuit with uniform brightness and long light duration. [0004] Technical solution: An electronic candle constant current lighting circuit according to the present invention includes a constan...
Claims
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Login to View More IPC IPC(8): H05B37/02F21V9/40
CPCY02B20/42Y02B20/40
Inventor 丁应琪
Owner NANTONG YA TAI CANDLE ARTS & CRAFTS