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SEQUENTIAL AC FLASHER – Circuit Schematic
SEQUENTIAL AC FLASHER
This circuit uses a ring counter made up of Q3, Q4 and Q5. Q2 acts as an oscillator which triggers the SCRs Q3, Q4 and Q5 in sequence. When an SCR fires, a 0. 2...
LED FLASHER USES UJT – Circuit Schematic
LED FLASHER USES UJT
A relaxation oscillator is used to flash an LED in the base circuit. C1 is charged slowly through R1 by the power source, then discharged periodically through R...
Dark Activated LED Flasher – Circuit Schematic
Dark Activated LED Flasher
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EXTENDED RANGE VU METER – Circuit Schematic
EXTENDED RANGE VU METER
This circuit can be used as a small beacon or marker light, amd toys or novelty items. R1 is an LDR that has‰¥10 k © dark-resistance, or a CDS photocell. C1...
High resolution dithering bar graph display – Circuit Schematic
High resolution dithering bar graph display
This circuit is an improved version of the Fig. 3-28 display, using a triangular-wave oscillator. With RA properly set, each incremental change in VIN can be de...
800 W soft start light dimmer – Circuit Schematic
800 W soft start light dimmer
This circuit shows the basic UJT building block (Fig. 9-1), which is used in a light dimmer with soft-start operation that applies current to the light slowly e...
Fluorescent starter – Circuit Schematic
Fluorescent starter
This circuit shows a solid-state fluorescent-lamp starter that uses a SIDAC. In this circuit, the ballast is identical to that used with a conventional glow-tub...
800 watt triac light dimmer with silicon bilateral switch SBS – Circuit Schematic
800 watt triac light dimmer with silicon bilateral switch SBS
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800 watt soft start triac light dimmer – Circuit Schematic
800 watt soft start triac light dimmer
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Low cost light dimmer using an SBS and triac – Circuit Schematic
Low cost light dimmer using an SBS and triac
Low-cost light dimmer using an SBS and triac. Shunting the SBS with two 20K resistors minimizes the flash-on effect, courtesy Motorola Semiconductor Products In...
LED light – Circuit Schematic
LED light
Wanted the flashlight to be squat so I could hold it in my mouth, throw it in mypocket, and lay it on a surface with the beam shootingup. I wanted to build it f...
Bar graph LED – Circuit Schematic
Bar graph LED
Using a 555 with perhaps a 4029, and I would add a 4511, then connect the pins (using resistors of course), of the bargraph leds, to "a-g" pins of the 4511. To ...
LED Sequencer – Circuit Schematic
LED Sequencer
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DIY 12v Dimmable Power Compact Driver – Circuit Schematic
DIY 12v Dimmable Power Compact Driver
The lighting hood of AquaOne AR-320 tank. These small tanks generally come with crappy tubes with low power output and an algae-friendly colour spectrum. There ...
Rustl3rs Custom Smart LED Light – Circuit Schematic
Rustl3rs Custom Smart LED Light
Those drivers could run fourteen leds but just went with twelve. This means that i could add 12 leds to mine with no extra drivers. Not that i will do that now ...
Dimmer – Circuit Schematic
Dimmer
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Flagpole light with burned out bulb sensor – Circuit Schematic
Flagpole light with burned out bulb sensor
I was offered an automatic garage door opener, a seeded back lawn, a fireplace and a refrigerator. I suggested that I had always wanted a flagpole so the develo...
LED Schematics – Circuit Schematic
LED Schematics
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Halogen Lamp Dimmer schematic – Circuit Schematic
Halogen Lamp Dimmer schematic
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LED message display schematic – Circuit Schematic
LED message display schematic
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