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El Cheapo Lightning Effect: Plans to simple floodlight using an office
rubbish bin made of metal and a "photoflood" bulb. (added 4/02) |
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Electric Power Controller: suitable as dimmer for100-Volt lamp up to1200W
(app note added 4/02) |
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Electronic Ballasts using the Cost Saving IR215X: application note AN-995
from International Rectifier (added 4/02) |
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Electronic Fluorescent Lamp Ballast: International Rectifier application
note in PDF format (added 4/02) |
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Electronic night light: (electronic circuit added 2/07) |
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Electronic Night Light: (electronic design added 9/02) |
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Electronic Transformer Dims Halogen Lamp: 05/11/00 EDN-Design Ideas / (added
5/02) (jkj0 Switched-mode power supply for a halogen lamp, commonly known as an
electronic transformer, is a clever and simple device which can be enhanced with
dimming control |
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Emergency Backup Lamp: (electronic circuit added 7/03) |
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Emergency Light and Alarm: Powered by2-AA NI-CD batteries Four switchable
options (added 9/04) |
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Emergency Light: (electronic circuit added 10/05) |
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Emergency Lighting Systems and Battery Powered Fluorescent Lighting: High Current TO92
Switching Transistors Provide 87% DC-AC Conversion Efficiency: Zetec
Semiconductors Applications Notes An overview of the principles behind typical
emergency lighting systems, fluorescent tube behaviour, and the requirements of the
transistors for efficient voltage inversion. The note also includes two "Royer" based
designs for low voltage systems. (app note added 2/06) |
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Emergency Strobe Flasher Generates 250V: 08/05/99 EDN-Design Ideas / (added
8/05) Figure 1 shows a complete circuit for an emergency lamp that operates from a 12V
automotive battery. The xenon flash tube requires a 250V-dc anode voltage and a 4-kV
trigger pulse. To generate the 250V dc, IC1, a switching regulator controller, and T1,
a standard Versa-PAC transformer, operate in the discontinuous-flyback .... |
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Experimental Cross Fader: ideas to modify simple rotary light dimmers to
make a cross-fader (added 4/02) |
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Fading LEDs: 2-strips of LEDs fading in a complementary manner 9 Volt
Battery-operated portable unit (added 9/04) |
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Fading Red Eyes: can be used to slowly illuminate and fade a pair of red
LEDs (added 4/02) |
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Flashing Beacon: (electronic Circuit / Schematic added 10/04) |
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Flashing Flashlight : Pretty nice design for a cheap consumer grade
flashlight. The power switch was not exactly as shown since there was an option to
have the lamp on solid. (added 2/05) |
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Flashing High Intensity LED 3rd Brake Light: This circuit to make a
flashing3rd brake light assembly was designed to be easy to locate all the needed
components and reasonably in expensive to build. (added 4/02) |
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Flashing Light Circuit 1: (electronic circuit added 4/05) |
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Flashing Light Circuit 2: (electronic circuit added 4/05) |
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Flashing Light Circuit 3B: (electronic circuit added 4/05) |
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Flashing Neons (NE 2/NE 51): one, two or3-neon indicator bulbs can be made
to flash in sequence (added 4/02) |
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Flashlight Timer : A nice design which even turns off if the pushbutton is
held depressed or jammed a long time. Not re-triggerable while the light is still on
though (added 1/06) |
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Flickering Fire Effect: This simple circuit uses four low-Wattage colored
bulbs and four fluorescent lamp starters to make nice flickering flame effect. (added
4/02) |
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Flickering Fire Light: LED or Bulb Flicker Shimmer Randomly Like Candle Flame or Fire
: This may well be the world's only discreet logic circuit to generate
truely random output. It makes an excellent candle flicker light for your haloween
pumpkin, and looks much more authentic than a shimmer light wherever a good a
simulated flame effect is required. I do not gaurantee the accuracy or safety of any
information herein.
(added 2/05) |
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Fluorescent Desk Lamp: This circuit will power a 6 inch4-Watt fluorescent
tube off a12 volt supply, consuming300 mA. It may also be powered by a suitably rated
universal AC/DC adapter. (added 4/02) |
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Fluorescent Lamps Ballasts and Fixtures: (circuit / schematic added 2/03) |
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Four Channel Dimmer Rack: (electronic circuit added 7/03) |
