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LED or Lamp Flasher - Minimum parts counting. Designed for3V battery
operation..... |
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LED or Lamp Pulser - Astonishing effect4.5 Volt supply..... |
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LED Sequencer - The model 4017 integrated circuit is a CMOS counter with ten
output terminals. One of these ten terminals will be in a "high" state at any given
time, with all others being "low," giving a "one-of-ten" output sequence. If
low-to-high voltage pulses are applied to the "clock" (Clk) terminal of the 4017, it
will increment its count, forcing the next output into a "high" state(circuit added
6/07) |
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LED Sign - uses two LED arrays to form a 7 X 10 matrix. It produces moving
messages or animations stored in an EPROM...... |
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LED strobe has independent delay and duration - 11-Jun-09 Issue of EDN
High-brightness LEDs, with independent delay and duration, find use in a
visual-inspection application..... [Design Idea by Michael C Page, Chelmsford, MA] |
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LED Stroboscope - This simple LED Stroboscope circuit which I designed,
maintains constant |
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LED Torch - Based on the Maxim MAX660, designed to power three 3mm/5mm white
LED's from 3V (1.5V min) , intended for replacing incandescent bulbs in small
torches…. [Submitted by Andre] |
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LEDs Flasher Alternately - Classic astable multivibrator using 2
transistors. Transistor is not critical. Try these: 2N4401, 2N2222, NTE123A, NTE123AP,
NTE159, TUP/TUN and those in your junk box, you may find that most of them will work.…
[Tony van Roon's circuit] |
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LEDs or Lamps Sequencer - Very simple, versatile modular design No limits to
the number of modules used in the ring..... |
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Light Chaser - (electronic circuit added 7/03) |
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Light Dimmer Circuit with 0 to 10 Volt Input - This is a simple dimmer
circuit that can be controlled with0 -10 VDC. It is designed for110-Volt AC. (added
6/06) |
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Lighthouse LED Flasher - This was originally designed for a model in a HO
train set. It simulates the behavior of the light from a lighthouse. The
LED intensity gradually increases, then flashes with a bright light and finally
decreases slowly in intensity. …. [Designed by David A. Johnson] |
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Lighting Third 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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Line Power Flasher - Scroll down to find circuits. Great for Christmas
lights, etc. Here is an unusual flasher circuit for 120VAC loads. The circuit is
similar to the two-transistor flasher seen in several circuits in techlib.com except
that an SCR is used…..... |
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Line Powered Xenon Flash Transmitter - This line powered xenon flash circuit
drives a small camera type flash tube. It has an optical isolator to allow the flash
to be safely triggered from some remote device. A flash rate of 2Hz is possible with
the circuit. …. [Designed by David A. Johnson] |
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LM3909 LED flasher - uses an LM3909 LED flasher…. [Tony van Roon's circuit] |
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LM555 LED Blinker Circuits - The circuit uses independent timers to flash
two light emitting diodes. Any time that light emitting diode D1 is lit__light
emitting diode D2 will be switched off. Light emitting diode D3 is on if both D1 and
D2 are off.....Circuit for model railroad trains…. [from Rob Paisley's Model Train web
site] |
Low Power 10 LED Sequential Flasher
A while back I posted a flasher circuit which flashed 10 LEDs sequentially. That
circuit was powered by four AA alkaline cells. The circuit below operates much
the same way but has been modified to run from a single 3v CR2032 lithium coin cell.
The average battery current drain is a low 400uA. Yet, by using some super
bright green surface mounted LEDs from King Bright, the effect is quite impressive
even if each LED is driven with only 2ma of current........ |
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Low Battery Indicator - Files contains several circuits: LED flasher, silent
metronome, low battery indicator, high voltage generator..... |
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Low Battery Voltage Flasher - This circuit is designed to monitor two
alkaline cells (3v) that from the battery often used in portable electronic equipment.
It use an inexpensive IC from Panasonic that is connected to an efficient LED flashing
circuit. When the battery voltage drops below a certain point the circuit flashes the
LED. In the off state the circuit draws only 1uA, while in the active flashing state
it draws 20uA. Published in EDN, Jan 2, 1997 …. [Designed by David A. Johnson] |
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Low Power Blink LED - ….(electronic schematic added 08/08) [Site is under
construction right now] |
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Low Power Crossing Light Flashers - The following are Low Power - Grade
Crossing Flasher circuits based on the LM555 and LM556 timer chips. They are designed
to drive Light Emitting Diodes but could be used to drive low current incandesent
lamps….. [from Rob Paisley's Model Train web site] |
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Low Power LED Flasher - based on LM3909…. [from Bill's Electronics Reference
Library] |
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