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Search results: 139   Output: 41-50
  1. Hold the current constant and within tolerance. Steve Sheard, ON Semiconductor, Tempe, AZ LEDs are more efficient than incandescent lights and can last 100 times longer, but they require specialized electronic-drive circuits to avoid overstress ...
    Circuits » Supply · Light · Power » ON Semiconductor » NSI45020AT1G
    23-08-2011
  2. George Varkey Here is a system based on PIR motion detector module BS1600 (or BS1700) that can be used for security or corridor lighting in powersaving mode. The 12V DC power supply required for the motion detector and the relay driver is derived ...
    12-07-2011
  3. Hélio Pereira Introduction In this project it was used the Piranha Super-flux RGB LED of common anode, and the PIC18F25K20 , in order to generate combinations of colors. It has two function modes, automatic that generate the color sequence ...
    07-07-2011
  4. Keep LEDs lit when AC voltage drops. TA Babu, India LEDs need power when rectified ac-mains voltage drops during its cycle. The circuit in Figure 1 lets you use an inductor-less, switching, offline power supply as an LED driver for emergency-exit ...
    12-05-2011
  5. PROBLEM: Even when both ceiling lights are on in the kitchen, the sink has always been too dark at night. Anyone standing at the sink creates a shadow from the ceiling light, making it tough to properly wash dishes or vegetables. SOLUTION: Install ...
    22-03-2011
  6. This circuit is a simple ultraviolate light that can be powered by a 6 volt battery or power supply that is capable of supplying 1 or more amps. Circuit diagram Parts C1 0.0047uf Mono Capacitor C2 0.1uf Disc Capacitor D1,D2 1N4007 Diode FTB ...
    27-12-2010
  7. Magirescu Iulian Introduction In the first place, a relay is like a switch to a coil assembly. This switch is activated when electricity is applied to the coil. With a common relay, the electricity must be continuously applied to the coil to ...
    15-12-2010
  8. This is a easy to build LED lamp circuit for Learning and building skills. This is the first draft schematic V 1.0. It will need improvements for Higher Power Lighting. Click to enlarge I will give a short summary, The LM317 here configured for ...
    04-12-2010
  9. Marián Štofka, Bratislava By varying the current through red and green LEDs, you can vary the hue in 32 steps. The circuit in Figure 1, which lets you create light of 32 of hues, uses red and green LEDs. A constant current divides ...
    10-11-2010
  10. Toon Beerten Introduction In this page we will introduce a great project designed by Toon Beerten. His project named DIY Led Mood Lamp can become a very interesting add-on for your room that's absolutely sure it will impress everyone. As you can ...
    08-11-2010
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