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4hv.org :: Forums :: High Voltage
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Eirik's flyback driver
Move Thread LAN_403
HazzWold 1993
Mon Nov 22 2010, 12:06AM Print
HazzWold 1993 Registered Member #2563 Joined: Mon Dec 21 2009, 10:17AM
Location: Australia
Posts: 280
 		In this circuit Link2
If i wanted to run the logic section alone on twelve volt. would cutting out the 7812 and putting 12v+ into where the collector of the 2N3904 joins up the top and then say 50v into the top of the flybacks primary. would that work? i just want to run this at a higher voltage. thanks
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Arcstarter
Mon Nov 22 2010, 12:34AM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
 		Yea that'd work.
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HazzWold 1993
Mon Nov 22 2010, 12:38AM
HazzWold 1993 Registered Member #2563 Joined: Mon Dec 21 2009, 10:17AM
Location: Australia
Posts: 280
 		cheers.
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tritium
Mon Nov 22 2010, 05:31PM
tritium Registered Member #2591 Joined: Fri Jan 01 2010, 11:58AM
Location: netherlands
Posts: 76
 		7812 is 24-30 volt max, maybe 40V but I am sure not 50V, and there are spikes, so you will blow your voltage regulator,

maybe a LM117 is better fot this, google the datasheets for it, they give plenty information.

cheers wink
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HazzWold 1993
Mon Nov 22 2010, 08:40PM
HazzWold 1993 Registered Member #2563 Joined: Mon Dec 21 2009, 10:17AM
Location: Australia
Posts: 280
tritium wrote ...

7812 is 24-30 volt max, maybe 40V but I am sure not 50V, and there are spikes, so you will blow your voltage regulator,

maybe a LM117 is better fot this, google the datasheets for it, they give plenty information.

cheers wink

Thanks but what i mean is i was cutting the regulator out all together.
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