Home Made Circuits and Schematics

Has anyone got any circuit diagrams for PWM driving using two CR2032's or two CR2016's) Has anyone run a laser diode of a Joule Thief? (I have some cheap $2 Red laser pointers I can smoke test before I use the $40 Laser sight.) Background Info The latest Weekend Projects video shows you how to build a "Joule Thief." Bre Pettis explains: Windell Oskay of Evil Mad Scientist Laboratories joins me to teach you how to make a super clever little circuit called the Joule Thief! The Joule Thief allows This “Joule Thief” circuit, using a battery that won’t work in any other device, can power a blue or white LED for approximately 8 days straight before it stops working. It could probably power a red LED for at least 10-12 days. You could also use it 1 shows author’s prototype and Fig. 2 shows the 1W white LED used. Fig. 3 shows the circuit diagram of desktop LED emergency light that comprises a combination of a joule thief circuit, a 1W white LED chip and a blackout detector section. Fig. EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user This week, Windell Oskay of Evil Mad Scientist Laboratories joins me to teach you how to make a super clever little circuit called the Joule Thief! The Joule Thief allows you to squeeze the life out of what most people think of as "dead" batteries! .

2011-11-26 MOSFET Joule Thiefs. A few years ago, 2007, I believe, I blogged a few Joule Thief circuits on which I experimented 01047a.pdf (application/pdf Object) Big Joule Theif. If SHTF, you may need to have power for something but have either only dead batteries around or no batteries. Making a battery is pretty simple to do but making a powerful one is harder. This circuit can I’ve studied the joule thief for a while His response to mindtrap mentions that the Joule Thief prefers a power source with low impedance. Impedance is kind of like the alternating version of resistance. A circuit with a high impedance will strongly resist changing current, where something with a "Joule thief" is a nickname for a minimalist self-oscillating voltage It can use nearly all of the energy in a single-cell electric battery, even far below the voltage where other circuits consider the battery fully discharged (or "dead"). .