EL Lamp Driver Using HV832MG
An EL lamp is a solid state, low power, uniform area light source. Because of its thin prole (as thin as 0. 3 mm) and the fact that it can be built into almos...
El-Cheapo Fluoro Ballast
This simple circuit can start small (15W or less) fluorescent tubes such as those used in PC board exposure and EPROM ultraviolet erasure boxes. As you can see,...
Economical Desk Lamp For Camping
This LED lamp was originally designed for use on a budget solar-charged 12V electrical system. It is bright enough for comfortable reading at night and features...
Dimmer With A MOSFET
This circuit shows that dimmers intended for use at mains voltage do not always have to contain a triac. Here, a MOSFET (BUZ41A, 500 V/4. 5A) in a diode bridge ...
Dancing LEDsCircuit
The basic circuit illuminates up to ten LEDs in sequence, following the rhythm of music or speech picked-up by a small microphone. The expanded version can driv...
Constant Current LED Drive
Most LED driver circuits use a series resistor to control the current through the LED. For applications needing a few LEDs, this is optimal. However, for applic...
Bluish Flasher
Firstly, it demonstrates how the combination of a blue and a white LED can be used to give a realistic imitation of a camera flashlight. Secondly, the good old ...
Backup Lamp
There are a few situations when a power failure is particularly difficult to handle. Some of these circumstances occur in the bathroom. This little circuit will...
Automatic Light Dimmer
In many cases, the dimmer presented here may be built into a wall-mounted box containing the light switch. It is intended for use with 240 V incandescent lamps ...
1W LED Driver
This circuit is designed to drive the 1W LEDs that are now commonly available. Their non-linear voltage to current relationship and variation in forward voltage...
Motion Sensor Light Circuit
Many people place motion detectors in their backyards or even in their houses so that when they walk through that area, the lights will automatically turn on. T...
Laser Diode Circuit
Unlike LED light, a laser`s light output is more concentrated, meaning it has a smaller and more narrow viewing angle. This means it must be directed at its sou...
Charged Capacitor to Light an LED
For this project, we are going to charge a capacitor with voltage and then have the capacitor act as a temporary power source for the circuit. After we charge t...
12VDC Fluorescent Lamp Driver
A number of people have been unable to find the transformer needed for the Black Light project, so I looked around to see if I could find a fluorescent lamp dri...
Night Light schematic
The complete hardware schematic of the Night Light Saver V6. 0. The AC line was protected F1, a 1A fuse. Any short circuit caused by saver`s components will blo...
Night Light circuit
The Saver V5. 0 runs simple clock emulation program, turns a night light on and off with preset time, say 19:00 to 22:00 everyday. The design features low cost,...
Harnessing the sun with solar garden light
With the world`s non-renewable resources being consumed at an alarming rate, it`s no surprise that when the new curriculum was released, 2 ½ years ago, the wor...
Synchronous Camera Flash Trigger Using IGBT
Typically a synchronous camera flash (e. g. slave flash) is triggered via an SCR. In this blog post, I will show you a circuit that can be used to trigger a sec...
A semi-practical capacitor-powered flashlight
High-energy capacitors of the type discussed can produce hundreds of amps when short-circuited, possibly causing severe burns, fire and/or property damage! Plea...
Dimmer Circuit
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