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3 Channel-Color Organ - An old ideabut I've had numerous
requests for a good design for this.....(electronic schematic added 12/08)
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3rd Brake Light - This circuit is NOT a pulser or flasher!
What's so special about this circuit? Well, the first third-brake light I
installed I had to pull a wire from the Third Brake Light all the way
underneath the carpet to the brake-pedal-switch and I thought it would be
easier to pluck the signal of both brakelights via the trunk. Bench-test
your circuit first and apply power to the circuit,.... [Tony van Roon's
circuit] |
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3rd Brake Light Pulser - Several years ago these flashers were
introduced in the automotive industry as part of the third brake light and
contained strobe lights (and strobing continuously for the duration of
pressing the break pedal) but got abandoned almost immediately sometime
later because of the 'strobe' effect it has on some people. This
circuit has become obsolet since much better circuits are available these
days without the 'lag' in between brakes caused by R4 and C3. One of the
circuits is listed below.…. [Tony van Roon's circuit] |
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3V LED Chaser - ….(electronic schematic added 03/08) |
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3-Way Dimming CFL Ballast - 3 way dimming system widely adopted in
US with conventional filament lamps consists of a light bulb that has a modified
Edison screw type base which allows 3 connections to be made to a special lamp socket
that also has 3 connections. (added 3/05) |
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4 Channel Dimmer Rack - (electronic circuit added 7/03) |
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40 LED Bicycle Light 555 Timer 6 Volt - The 555 circuit below is a flashing
bicycle light powered with four C,D or AA cells (6 volts). Two sets of 20 LEDs will
alternately flash at approximately 4.7 cycles per second using RC values shown (4.7K
for R1, 150K for R2 and a 1uF capacitor). Time intervals for the two lamps are about
107 milliseconds (T1, upper LEDs) and 104 milliseconds (T2 lower LEDs).....(circuit /
schematic design added 6/06) |
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40 Watt Fluorescent Lamp Inverter (Aaron Cake) - This40W fluorescent lamp
inverter allows you to run40W fluorescent tubes from any12V source capable of
delivering3A. (added 04/03/02) |
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42 Watt Compact Fluorescent Ballast - CFL-2 is an electronic ballast
design for driving a 42 watt compact fluorescent lamp from a 120 or 230 volt AC line.
circuit was designed using IR2156 Ballast Driver IC. main features of
circuit are programmable frequency, preheat time, over-current threshold and dead
time. (added 3/05) |
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4-channel dimmer rack - This document describes my light dimmer project I
have made. This document is not.....(electronic circuit added 04/05/06)
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5W Fluorescent Lamp Intensity Modulator - The circuit was designed to
experiment with using small fluorescent lamps as a broad pattern source of modulated
light. The circuit hits the small lamp with narrow 1us pulses at a rate of 10KHz. Each
pulse launches about 10 watts of visible light. The lamp starting method is a bit
crude but the circuit does work..... [Designed by David A. Johnson] |
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60 Watt Lamp with Auxiliary 14v LED Lamp - This circuit controls power to a
standard 60 watt lamp plus generates an auxiliary 14v DC supply which can power an
automotive style 12 LED array. (added 7/06) …. [Designed by David A. Johnson] |
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73 MHz Hallogene Lamp Radio-Controlled - …..... [Site is under construction
right now] |
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8 Bit Digital Light Intensity Controller - (design circuit added 8/02)
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8 Photo-Detector Circuit - There are two versions of the "8 Photo-Detector"
circuitboard. Circuitboards and parts are available for both versions of this
circuit..... [from Rob Paisley's Model Train web site] |
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8W Fluorescent Lamp Inverter: Compact DC-to-AC Inversion for Efficient Lighting
Systems - Zetec Semiconductors Applications Notes An enhanced TO92
packaged one transistor design that uses a minimum of components, and yet achieves
performance and efficiency normally associated with much larger packaged switching
transistors. The design is optimised to provide a fast turn-off condition for
transistor, reby allowing inclusion.....(app note added 2/06) |
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9 Second LED Relay Timer - This circuit provides a visual 9 second delay
using a 7 segment digital readout LED. When the switch is closed, the CD4010 up/down
counter is preset to 9 and the 555 timer is disabled with the output held high. When
the switch is opened,… [Bill Bowden] |
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