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#Post#: 6378-------------------------------------------------- |
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Joule Lamp at 220V - problems and issues |
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By: puneet1984 Date: March 24, 2019, 2:47 pm |
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Hello |
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i am noob and not from electrical background and try these |
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circuits as a hobby. I have only DMM and no oscilloscope. |
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Recently tried building a 14P-100S turns-aircore (on a bobbin |
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and not on a 4"D core) as per the Lynx instructions and with a |
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ferrite core was able to get one 220v 6W LED working but with |
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lots of flickers. Without ferrite LED would not light up at all. |
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I was hoping if someone can help me out regarding the turns i |
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need to change or any other change i need to make. |
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Also i have few doubts please help me in clarifying them:- |
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1) need to understand the working and principle of joule lamp / |
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blocking oscillator /joule thief /bedini circuit /unity |
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circuits/ re-EMF circuits - suggest reliable source/material to |
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understand the working |
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2) how does the turns ratio affect the voltage and current draw |
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3) is a 4 inch diameter core is essential to it. |
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4) any other transistor which can work and what to look for in |
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the specs before choosing one. |
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5) will a high Amp Diode or a schottky diode have any effect on |
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the efficiency on the circuit. |
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#Post#: 6379-------------------------------------------------- |
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Re: Joule Lamp at 220V - problems and issues |
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By: CG Date: April 9, 2019, 6:42 am |
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Lighting a 220 volt LED with this circuit is really punishing |
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the transistor since the base of the transistor can't handle |
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much more voltage and current than it already does. |
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Also Lynx's circuit runs the LED on a pulse, not DC. |
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I suggest trying a series version of joule thief circuit where |
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the LED is driven by the emitter to collector voltage/current. |
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The brand/type of LED bulb matters, try a different one. |
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Dimmable LED bulbs work best. Non dimmable bulbs will usually |
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flash like a strobe lamp. |
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Hope this helps. |
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https://youtu.be/tygN1R-lCeE |
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#Post#: 6384-------------------------------------------------- |
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Re: Joule Lamp at 220V - problems and issues |
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By: CG Date: April 28, 2019, 2:59 pm |
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Use only 'dimmable' LED bulbs. |
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