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Light Flasher Circuits Page 8
Light Flashers: #'s A - C
D - F G - K L
M - R S T - Z
Last Updated on:
Friday, August 29, 2008 02:34 PM
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Circuits Designed by Dave Johnson, P.E. : |
- Universal Flasher using Latching Relay: This circuit is powered
by a 9v battery and controls any AC to DC load through a set of relay contacts, rated at 10 amps. To conserve power, the circuit uses a latching relay. A variable frequency
oscillator controls the flashing speed from 0.2Hz to 2Hz. A pair of pulse generators first latch the contacts closed then unlatches them open. The power consumption is so low that a
9v battery will last for several months.
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| Links to electronic circuits, electronic schematics, designs for
engineers, hobbyists, students & inventors: |
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Third Brake Light Pulser: (schematic / circuit added 10/02) |
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Traffic Light Control Circuit (74145): This page features a very basic traffic light circuit that is built around the TTL
family 74145 -1 of10 Decoder. The circuit is designed to drive light emitting diodes that are connected in a common anode arrangement. (added 4/02) |
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Traffic Light Controller: controls on3 LED traffic light sequence (added 4/02) |
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Transistor organ: This simple circuit can provide hours of enjoyment as you learn tunes, play duets or just make some really
weird sounds by pushing all the buttons at once. You have probably seen this ciruit before, it is fairly common. I have seen it in several books. The best thing about the circuit is that you can
tune each individual note, or go to a whole new octive by changing one capacitor (C1). Because of this, it is possible to from an entire Transistor Organ ensemble. Why you would want to do this is
anyone's guess... (added 4/05) |
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Two Transistor LED Flasher #1: (circuit added 7/02) |
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Two Transistor LED Flasher #2: (electronic design added 9/02) |
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Two Wire Lamp Flasher: Ideal to operate3 to24 Volt DC existing on-Circuit lamps LED operation is also possible (added 9/04) |
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Two-wire Lamp Flasher: This circuit has been designed to provide that continuous light lamps already wired into a circuit, become flashing. Simply insert the circuit between existing
lamp and negative supply. Especially suited for car or panel pilot lights, this device can drive lamps up to 10W.... (design added 11/06) |
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Typical Strobe Light Trigger Circuit: 5/034/02) |
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Universal Flasher Circuit: LED flasher with the LM3909 IC (added 2/06) |
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White LED Driver Touts High Efficiency: 06/12/03 EDN-Design Ideas / (added 7/03) White LEDs, the most recent addition to the
LCD backlight, find common use in providing backlight for color LCDs. Thanks to their size and white-light output, they appear in small, portable devices with color displays, such as PDAs and
cellular phones. Like other LEDs, a white LED needs a constant-current source—typically,.... |
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Xenon Flash and Strobe Page: (electronic diagram added 6/03) |
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Xenon flash valve: An experiment of the xenon flash valve. (added 10/05) |
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Xenon Strobe Light #1: (circuit added 7/02) |
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Xenon Strobe Light #2: works from115-Volt AC line (added 4/02) |
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Light Flashers: #'s A - C
D - F G - K L
M - R S T - Z
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