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LED and Light Circuit

Index 12

Dancing LEDs

Published:2012/12/23 20:45:00 Author:muriel | Keyword: Dancing LEDs

Dancing LEDs
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Bicycle back Safety Light

Published:2012/12/21 21:42:00 Author:muriel | Keyword: Bicycle, back , Safety Light

Bicycle back Safety Light
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LED or Lamp Pulser

Published:2012/12/21 21:41:00 Author:muriel | Keyword: LED or Lamp Pulser

LED or Lamp Pulser
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Two-wire Lamp Flasher 2

Published:2012/12/21 21:41:00 Author:muriel | Keyword: Two-wire Lamp Flasher

Two-wire Lamp Flasher 2
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LED or Lamp Flasher

Published:2012/12/21 21:40:00 Author:muriel | Keyword: LED or Lamp Flasher

LED or Lamp Flasher
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Power Flasher

Published:2012/12/21 21:24:00 Author:muriel | Keyword: Power Flasher

Power Flasher
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Sequential Brake/Turn Lights

Published:2012/12/21 21:23:00 Author:muriel | Keyword: Sequential , Brake/Turn , Lights

Sequential Brake/Turn Lights
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LED driven tail/brake Light Cluster

Published:2012/12/21 21:23:00 Author:muriel | Keyword: LED driven, tail/brake Light , Cluster

LED driven tail/brake Light Cluster
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Voice controlling music lantern circuit (3)

Published:2012/12/18 2:01:00 Author:Ecco | Keyword: Voice controlling , music lantern

Voice controlling music lantern circuit (3)
Transistor VT3 forms a main circuit of the lantern E, VT1 and VT2 form a control loop, the 220V AC is rectified by VD, Buck by R3, regulated by VS and filtered by C3 filter to output about 12V stable DC voltage for controlling the loop's power. Microphone B can pick up acoustic signal of indoor environment, then it convert it to electric signal which is amplified by the transistor VT1 level, then the amplified signal is flowing to the base of VT2 ( RP is a voice sensitivity adjustment potentiometer) by RP and C2. VT2 is connected into a non - biased emitter follower. (View)

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Four-way Kala 0K lighting rendering circuit (HL3034)

Published:2012/12/17 3:10:00 Author:Ecco | Keyword: Four-way , Kala 0K , lighting rendering

Four-way Kala 0K lighting rendering circuit (HL3034)
In the Figure, B is the electret condenser microphone which can pick up the the sonic signal and output corresponding electrical signals, then it is amplified by VT1 and sent to Manifold HL3034 ⑤ feet by RP1, and it can control internal voltage controlled oscillator VCO after being amplified, the oscillation frequency changes with audio signal strength. Therefore, changing Q1 ~ Q4 output pulse conversion rate can make the four groups lantern E1 ~ E4 cycle rate change with the strength of the sound waves. Adjusting the RP1 can change the voice sensitivity Lantern circulation rate of the circuit. (View)

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The homemade simple emergency light circuit diagram

Published:2012/12/17 3:34:00 Author:Ecco | Keyword: homemade, simple, emergency light

The homemade simple emergency light circuit diagram
The circuit is shown as the figure, the 220V mains is rectified through transformer T, Buck by VD1 to obtain approximately 9V DC voltage on the capacitor C1. This voltage charges for battery all the way through VD2, and resistor R2 provides the base bias for V1 until saturated conduction, then V2 is turned off, bulb H does not shine. (View)