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Light Flasher Circuits Page 3
Light Flashers: #'s A - C
D - F G - K L
M - R S T - Z
Last Updated on:
Friday, July 18, 2008 11:32 AM
| Circuits Designed by Dave Johnson, P.E. : |
- Fake Car Alarm Light
Whenever the car’s ignition is turned off, this circuit activates a flashing LED, which can be positioned to appear as an active alarm system. (added 7/06)
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- FLASHING LED ADVERTISING BADGE #1
I have seen numerous flashing light badges at trade shows and conventions. They are often handed out as gifts to promote some business. The devices often use inefficient circuits, which
cause the battery power source to be quickly depleted. My circuit is simple but efficient enough to provide months of continuous LED flashing. It also has a tiny push-button switch to turn on
and off the light flashing, extending battery power.
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- FLASHING LED ADVERTISING BADGE #2
This circuit is similar to flashing LED advertising badge #1. It uses a CD4013 dual D Flip/Flop IC. The 74HCT74 IC in Flashing LED Advertising Badge #1 does not always work. As
in #81, a single lithium battery will provide months of continuous LED flashing. It also has a tiny push-button switch to turn on and off the light flashing.
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| Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors: |
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Dancing LEDs : A LED sequencer, following the rhythm of music or speech 9 Volt Battery-operated portable unit (added 9/04) |
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Dark-activated LED or Lamp Flasher: Simple photo-sensitive circuit 3V battery supply (added 6/06) |
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Disco
Lights: software and hardware for controlling disco lights from your PC (added 4/02) |
| DMX lighting and special effects:
(electronic circuit added 05/07) |
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Dual
Alternating Flashing Light Circuit: (electronic circuit added 4/05) |
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Dual
Tandem Flashing Light Circuit Powered by a 9 Volt Battery: (electronic circuit added 4/05) |
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Emergency Strobe Flasher Generates 250V: 08/05/99 EDN-Design Ideas / (added 1/06) 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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Expandable 16 Stage LED Sequencer: (circuit added 7/02) |
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Fantastic Atom Expander: "exploding atom" effect using 98 LEDs (electronic circuit added 4/02) |
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Flash Slave Trigger: Flash slaves are used when you need to supplement one flash unit with one or several more. This slave
trigger simply triggers those other units. It does this by "seeing" the first flash (using a phototransistor) and triggering the other flashes a few microseconds later. The sensitivity of the
circuit is adjustable to compensate for ambient light or dimmer than usual master flashes. (added 4/02) |
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Flasher Ideas: Files contains several circuits: LED flasher, silent metronome, low battery indicator, high voltage generator
(added 7/03) |
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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 6/06) |
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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 3: (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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Flashing Rear End Devicefor DCC Systems: (electronic circuit added 7/03) |
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Flashing Road Barricade : This design has a low duty cycle to preserve battery life and underdrives the cold filament to extend
bulb life (added 2/05) |
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Flashing/Pulsing third Brake lite for cars: (electronic circuit added 4/05) |
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Flashing-Cum-Running Light: (electronic Circuit / Schematic added 10/04) |
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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 2/05) |
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Fleapower flasher Draws less than 50 µA: 01/23/03 EDN Design Ideas / (added 1/05) Some applications require a
circuit to indicate that a battery's voltage has fallen below a certain value. However, if you don't frequently check the indicator, the low-battery indicator itself can easily discharge the
battery. The circuit in Figure 1 indicates when the battery voltage has dropped below a preset value.... |
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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 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) |
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Flickering Lights: Halloween flickering lights (electronic circuits added 11/06) |
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Flip Flop Flashers Buzzers Etc.: (electronic circuit added 7/03) |
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Light Flashers: #'s
A - C D - F G - K
L M - R S
T - Z |
