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Power supply reverse engineering

Started by Pigyboy, July 17, 2010, 10:31:32 AM

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Pigyboy

July 17, 2010, 10:31:32 AM
Can anyone out there figure out this little power supply?

http://www.oflittleinterest.com/content/view/36/31/

220 volts from what, 3-4 components?
And you'll have to admit, I'll be rich as shit
I'll just sit and grin, the money will roll right in....
                                                            - FANG

Rob Strand

#1
July 17, 2010, 12:18:45 PM
Single transistor inverter,  common in battery powered fluorescent tube circuits, gas lighters, vacuum fluorescent display drivers (in old calculators).  Many different ckts around but this one is quite common,

http://www.repairfaq.org/REPAIR/teeny.gif
http://www.southgatearc.org/images/techtips/inverters/inverter2.gif
http://www.pocketmagic.net/wp-content/uploads/2009/05/inverter.jpg
http://members.misty.com/don/amtac1.gif

More,
http://www.laserfaq.org/sam/uc350vc.gif

Higher powered circuits use a two transistor push-pull circuit.


Send:     . .- .-. - .... / - --- / --. --- .-. -
According to the water analogy of electricity, transistor leakage is caused by holes.
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