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Joule Thief LED Night Light – Circuit Schematic
Joule Thief LED Night Light
I have many used batteries around. Remote controls, cameras, many electronic gadgets all use batteries, mostly AA size. I always felt guilty for throwing away t...
Joule Thief circuit in a Flashlight Bulb – Circuit Schematic
Joule Thief circuit in a Flashlight Bulb
Investigating a Paradox: Recently, I saw an energy saving LED flashlight for sale and it only used one 1.5 volt battery. I purchased this light and took it apar...
Joule Thief 10x10 LED Lamp – Circuit Schematic
Joule Thief 10x10 LED Lamp
Afraid of the dark? Built a simple Joule Thief circuit and would like to go further? Just want to have a cool blue light to show off to friends? Let me present ...
Joulethief SEC exciter circuit – Circuit Schematic
Joulethief SEC exciter circuit
You are now showing a 1n4148 diode, and a 1 meg resistor. My question is: How can you can light the led(s) off of a 1.5 volt battery. That additional coil L3, I...
LED lights using Joule Thief circuits – Circuit Schematic
LED lights using Joule Thief circuits
You would think that given how many flashlight projects I do that I actually own a lot of lights. I can change the inductor to adjust the current setpoint, but ...
Joule Thief Hurricane Lamp Project – Circuit Schematic
Joule Thief Hurricane Lamp Project
The Joule thief… yes, It’s been discussed here before, and in many other places, so not something really new, but the twist is that I took the concept and i...
Low power long life LED flashlight Joule Thief circuit – Circuit Schematic
Low power long life LED flashlight Joule Thief circuit
A low power, long life LED flashlight circuit. Electronic Design proposed a simple circuit to resolve this in a recent article. The front end of their circuit d...
4 watt LEDS with 1.5V from a Joule thief – Circuit Schematic
4 watt LEDS with 1.5V from a Joule thief
The post discusses a joule thief circuit which drives and illuminates four 1 watt LEDs using just a single 1.5V pencil cell....
Blue White LED Driver Circuit Joule Thief – Circuit Schematic
Blue White LED Driver Circuit Joule Thief
Blue and white LED drivers using joule thief circuit has been covered in this post, lets learn more. The circuit may be simulated with the following points...
Advanced version of Joule Thief circuit – Circuit Schematic
Advanced version of Joule Thief circuit
When working with these circuits, I bought a light-meter to take the guesswork out of assessing light levels as the human eye is very bad at doing that....
ATTiny Joule Thief circuit – Circuit Schematic
ATTiny Joule Thief circuit
Joule thieves arent just for lighting plain old LEDs!. Attiny joule thief neopixel...
Joule thief History – Circuit Schematic
Joule thief History
Example of a joule thief circuit driving an LED. The coil consists of a standard ferrite toroid core with two windings of 20 turns each using 0.15 mm....
Joule Thief LED circuit 2 – Circuit Schematic
Joule Thief LED circuit 2
Thats why you have to draw a circuit using a placement and CONVENTION that everyone recognises....
Fluorescent Lamp Driver Circuit and Project – Circuit Schematic
Fluorescent Lamp Driver Circuit and Project
Starting a fluorescent on an inverter The 12V drivers for fluorescent lamps are tricky, because of the compromise between a good operating efficiency...
Joule thief AA battery led circuit – Circuit Schematic
Joule thief AA battery led circuit
4 thoughts on Joule thief AA battery led circuit. In the schematic of the led circuit you can see the power source (V1) that represents an empty battery. It has...
Bright JOULE THIEF flashlight circuit – Circuit Schematic
Bright JOULE THIEF flashlight circuit
Breathe down and come out on the bright flashlight. In order to promote the voltage, I have used pieces of highly skilled Joule thief circuit...
Blue Blinky Joule circuit – Circuit Schematic
Blue Blinky Joule circuit
Daylight shutoff I updated the schematic not shown on this one...
Super Joule Thief – Circuit Schematic
Super Joule Thief
Small Joule Thief With 9 white LED draw about 250 mA at 1.5V the battery was a little under 1.3 Volt at the video time....
Motion activated joule thief circuit – Circuit Schematic
Motion activated joule thief circuit
","2 thoughts on Motion activated joule thief led bike light. The switch-on and delayed switch-off circuit is simple....
One Winding Joule Thief circuit – Circuit Schematic
One Winding Joule Thief circuit
Introducing the Cree 1 Watt LED High Power Joule Thief Kit. Joule thief Simulation II Graph and Schematic...