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Search results: 142   Output: 61-70
  1. G. Forrest Introduction This circuit is a dimmable white LED lamp array with 18 LEDs. The lamp brightness is regulated as long as the input voltage is above 10.5V. A low-dropout analog voltage regulator is used for a simple and relatively efficient ...
  2. Here is the schematic of a simple fluorescent lamp driver circuit based on two transistors. The circuit uses capacitive ballasting for driving the tube. An 8 W standard fluorescent tube can be efficiently driven using the circuit. The two ...
  3. Description Here is a simple and effective circuit for driving florescent lamps from a 12 V supply. The circuit is nothing but consists of an oscillator, a MOSFET switch and a step-up transformer for driving the florescent lamp. The IC1 TLC555 is ...
  4. Spehro Pefhany Microcontroller port pins can typically be driven either high or low, or else be put into an input or high-impedance state. This circuit uses the three states to drive two separate LEDs with one port pin. This can be very useful when ...
  5. In this week's Weekend Projects video podcast, Make Magazine's Bre Pettis and I show you how to make a Joule Thief. The PDF file that goes with the podcast is here (450 kB PDF file). So whatsa Joule Thief? It's a little wisp of a circuit that ...
  6. This year I’ve been going on a lot of bike rides with friends, sometimes on public roadways, sometimes after dark. My bike has a nine watt 500 some odd lumen headlight, which makes it easy to see where I’m going, and definitely makes me ...
  7. Things to note in the source code: You can easily define how many frames of animation are in your animation loop by changing the total_frames variable to how ever many frames you have. The flying animation example has 178 frames. If you only have ...
  8. The drawing process is really quite simple. The pic microcontroller puts 00000000 00000000 on the eeproms address bus (selects the first address) This byte of info (at that address) is now placed on the data bus and all RED GREEN AND BLUE ...
  9. Brads electronic projects This was my first attempt at a nice and colourful RGB LED POV Display. POV stands for persistence of vision. The circuit uses just 8 RGB leds which are mounted vertically and when spun horizontally it gives the illusion of ...
  10. By simply touching this touch dimmer switch you can increase the light intensity of incandescent lamps in three steps. Initially, when mains switch is on, the bulb is off. Now, if you touch the touch plate, the bulb glows dimly. On second touch, ...
    Circuits » Light » Tontek » TT6061A, TT8486A

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