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LED Lights for AC line - Circuit diagram of an LED night light
made by a north american manufacturer. Remarkably it only draws 100mW and
has some surge voltage immunity. A clear plastic light pipe is used to
diffuse the light from the LED into the room…. [Reverse engineered schematic
by Stepan Novotill]
LED Mood Light - This circuit makes a nice lamp that consumes
little power, runs cool, and has an incredibly long lifetime. The lamp puts
out a warm yellow shade of light, the color may be adjusted by changing the
number of red or green LED strings. [Circuit by Forrest Cook]
LED or Bulb flicker shimmer randomly like candle flame or fire -
This may well be the world's only discreet logic circuit to generate truly
random output. It makes an excellent candle flicker light for your Halloween
pumpkin, and looks much more authentic than a shimmer light wherever a good
a simulated flame effect is required. I do not guarantee the accuracy or
safety of any information herein. (added 2/05) [Circuit by Stepan
Novotill]
LED Pilot Light AC or DC - LED current is constant between 6 and 8
mA at5 to30Vdc…. [Tony van Roon's circuit]
LED senses and displays ambient-light intensity - 9-Nov-06 Issue
of EDN LED doubles as photosensor and visual indicator of
ambient-light intensity..... [Design Idea by Dhananjay V Gadre and Sheetal
Vashist, ECE Division, Netaji Subhas Institute of Technology, New Delhi,
India; Edited by Brad Thompson and Fran Granville]
LED Torch - A common problem with small torches is the short
life-span both of the batteries and the bulb. The average incandescent
torch, for instance, consumes around 2 Watts. The LED Torch in Fig. 1
consumes just 24 mW, giving it more than80 times longer service from 4 AA
alkaline batteries (that is, up to one month's continuous service)..... [Rev
Thomas Scarborough]
LED Traffic Lights - The LED traffic Light circuit controls 6 LEDs (red,
yellow and green) for both north/south directions and east/west directions. The timing
sequence is generated using a CMOS 4017 decade counter and a 555 timer. Counter
outputs 1 through 4 are wire ORed using 4 diodes so that the (Red, North/South) and
(Green, East/West) LEDs will be on during.... [Bill Bowden]
