Fluorescent Lamps Ballasts and Fixtures
Thanks to Don Klipstein ( don@misty. com ) for his comments and additions to this document. His Web site ( ) is a valuable resource for information relating to ...
wire three-way circuit between two buildings with only 3 conductors
I am rewiring my entire house after a major malfunction of two antique knob and tube circuits. I`m up against a challenge with some outdoor lights. Here`s the s...
Simple Sixteen Stage Bi-Directional LED Sequencer
The bi-directional sequencer uses a 4 bit binary up/down counter (CD4516) and two "1 of 8 line decoders"74HC138 or 74HCT138) to generate the popular "Night Ride...
Reuse Old Mobile Phone Battery for LED lighting
Normally mobile batteries have a lifespan of 2-5 years under normal usage. But then we have to replace them. Nowadays there are cheap replacement batteries whic...
Simple Clap Operated Stairway Light Switch Circuit
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circuit diagram Cheapest High power LED driver
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Supply Voltage Indicator
This simple and slightly odd circuit can clearly show the level of the supply voltage (in a larger device): as long as the indicator has good 12 volts at its in...
Drilling Floor Rear Light Rear Light Mounted
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Simple Lamp Dimmer Fan Regulator
The circuit works by varying the firing angle of the Triac. Resistors R1, R2 and capacitor C2 are associated with this. The firing angle can be varied by varyin...
LED Emergency Light Circuit With Battery Over Charge Protection
The following circuit was designed by me in response to the request sent by PP. The article describes an LED emergency light circuit with advanced features such...
Automatic light dimmer circuit
This is an automatic light dimmer circuit. You do not need to dim the lights by yourself. It is so very convenient, because we use the LDR to detect external li...
24 LED SpotlightCircuit
A light-emitting-diode lamp is a solid-state lamp that uses light-emitting diodes (LEDs) as the source of light. The Light Emitting Diodes (LEDs) are an attract...
10 led VU Meter using LM3915
Circuit diagram is a very simple circuit-level indication, with 10 Led. Used a series of half-wave rectification of precision around IC2 TL071, with a single. L...
A wireless color-changing decoration project
So you`re either revved up about building one of these for yourself or you`re just reading on because you`ve nothing better to do. I can understand that. So let...
TRIAC Dimmer LED Driver Reference Design
This reference design converts 90V AC to 135V AC input, and drives seven, or eight series connected LED s from 300 to 600 mA average current. The LM3445 switchi...
Offline High Brightness LED Driver Evaluation Board Using FAN7554
A high brightness LED evaluation board has been developed using the Fairchild Semiconductor FAN7554D PWM controller...
LM3445 Datasheet - Triac Dimmable Offline LED Driver
The LM3445 (datasheet) is an adaptive constant off-time AC/DC buck (step-down) constant current controller designed to be compatible with triac dimmers...
FAN5607 Evaluation Board
The FAN5607 Evaluation Board is a compact circuit including the FAN5607 HMPX in a 4x4 MLP package and two 4.7uF capacitors which can provide stable input/output...
Light dimmer
This dimmer is used to adjust the brightness of incadescent bulbs (dimming) from zero to maximum. Regulation from zero is achieved using double delay circuit. T...
DIY Ghost Buster Pack LEDs!
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