 really quick simple question -- steve wards micro sstc
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teslaguy
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Sun Sept 02 2007, 08:42AM
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Registered Member #617
Joined: Fri Mar 30 2007, 07:29PM
Location: Buffalo NY
Posts: 49
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I just ordered the parts for it and i was wondering if it would be safe to run the mosfet off of reguated line voltage instead of the 35vdc? i have some bigger mofsets on hand to so i might try to switch a newer one in to. Would I be safe with line voltage or do i need bigger r3?  is the circuit for reference
thanks much.
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Steve Conner
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Sun Sept 02 2007, 10:20AM
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Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
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Do you mean "line" as in 120V AC from a wall socket? If so, that's probably not a good idea as the voltage across the MOSFET can be several times the supply voltage (at least 3 times) so the 160V DC you get from rectifying the line could possibly blow a 600V MOSFET. Step it down with a transformer out of an old stereo or something. This also isolates the whole mess from the line and reduces your chances of getting fried.
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