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4hv.org :: Forums :: General Science and Electronics
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Modding a camera flash circuit for lower voltage output

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kimbomba
Fri Oct 21 2011, 01:47AM Print
kimbomba Registered Member #3854 Joined: Fri Apr 29 2011, 03:45AM
Location: Mexico
Posts: 95
I want to take advantage of the low voltage input of the camera flash circuit in order to use a low voltage solar panel (2 volts) for charging
a 6 volt battery. I plan to rewind the transformer for lower voltage output. The original winding has 6 turn primary and 1750 turn secondary. I would like to know how many secondary turns will I need for a (approximately) 10 volt output. Thanks in advance
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Tetris
Fri Oct 21 2011, 11:16PM
Tetris Registered Member #4016 Joined: Thu Jul 21 2011, 01:52AM
Location: Gainesville, FL
Posts: 660
O_O you want to rewind the secondary? Do you know how thin that wire is? The transformer itself is so tiny, and rewinding a 1750 turn secondary? It's not practical, in my opinion.
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Legit_bacon
Sat Oct 22 2011, 12:27AM
Legit_bacon Registered Member #4034 Joined: Thu Jul 28 2011, 10:41PM
Location: somewhere in the Southern hemisphere
Posts: 138
how about using a boost converter? I am not very knolagable on transformers but id say its just a ratio so you'll want a 1:5 ratio (primary to secondary) so if your primary is 6 turns a 30 turn secondary should work. Also use a thicker wire.
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kimbomba
Sat Oct 22 2011, 03:22AM
kimbomba Registered Member #3854 Joined: Fri Apr 29 2011, 03:45AM
Location: Mexico
Posts: 95
HighVoltageChick wrote ...

O_O you want to rewind the secondary? Do you know how thin that wire is? The transformer itself is so tiny, and rewinding a 1750 turn secondary? It's not practical, in my opinion.

maybe rewinding is not practical, but winding a new one may be. It will not be 1750 turns since i need much lower voltage than the 300 volts the circuit normally produces
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