Off the shelf design with basic hand tools. Blocking oscillator Leds in parallel. 2.4v design. The output end where the single led used to be is now on opera… Video Rating: 5 / 5
Tag Archive: Light
Feb 21
One-Minute Physics: Why there is no pink light
You’ve probably seen light that looks pink, but where does this colour come from? Different wavelengths of visible light correspond to colours of the rainbow – and pink isn’t one of them. In our latest One-Minute Physics video, animator Henry Reich takes us through the mysterious make-up of pink light. New Scientist TV (c) Video …
Feb 19
Jeanna’s Light
This is a modified version of Jeanna’s Joule Thief FL driver circuit using a big 31/4″ toroid coil. The circuit is running on one AA 1.5 volt battery. A modified 10 watt CFL bulb is being illuminated. The circuit shown in the video has an error in it. There is no connection between the transistor …
Feb 17
Albert Einstein: Why Light is Quantum
Pi day (3.14) is Albert Einstein’s Birthday! To celebrate, we’ll explain 4 of his most groundbreaking papers from 1905, when he was just 26 years old. minutephysics is now on Google+ – bit.ly And facebook – facebook.com And twitter – @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in …
Feb 13
13watt cfl to 40watt incandescent light comparison
This is a modified joule thief, powering a gutted 13 watt cfl compared to a 40 watt incandescent. The cfl is outputting more light than the 40 watt, maybe close to a 50 watt incandescent. Input to 13 watt cfl is around 7.4 watts at 12 volt input. More info at: www.energeticforum.com Video Rating: 3 …
Feb 10
jeanna’s Lidmotor’s Jeanna’s Light
This is a very simple joule thief circuit that has a single secondary of over 300 turns. This powerful circuit can easily light a CFL. The components are these: TIP3055, 33 ohm or 22 ohm resistor,one 25 ohm Radio Shack rheostat, one 1.2v NiMH battery, a 3.38 inch diameter ferrite toroid which is wound with …
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