 Micro SSTC - problems
|
|
|
Dr. H.
|
|
Fri Sept 21 2007, 11:38AM
|
|
|
Registered Member #931
Joined: Mon Jul 30 2007, 05:25PM
Location: Bulgaria
Posts: 486
|
thenks for the replys guys :)
I was asking for the MOSFETs because i want to drive it directli from the mains (not throug a stepdown transformer like he shows in his circuit).
For the new coil (ctc-circuit) i will definetely not use steel box but with the micro sstc i didn't see any difference in performance with or without the box.
I will start a new threath for the new coil and i will put my results there. The only question is will the mosfets survive at 300v half wave rectified (irf740 are 400v 10A )
|
|
Back to top
|
|
|
Tom540
|
|
Fri Sept 21 2007, 05:52PM
|
|
|
Banned on 3/17/2009.
Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
|
They should survive as long as you don't run it in DRSSTC mode. I had a coil that ran at 1MHz CW using those FETS and was powered by two dual power supplies running in series @120VDC. Current limiting with a cap on the line voltage might not be a bad idea.
|
|
Back to top
|
|
|
Dr. H.
|
|
Fri Sept 21 2007, 07:14PM
|
|
|
Registered Member #931
Joined: Mon Jul 30 2007, 05:25PM
Location: Bulgaria
Posts: 486
|
In the original sheme they use a step down transformer one way rectified with irf640. It is written that the maximum voltage is 200V. Because i want it driven directly from the mains one way rectified i will change the mosfets with some that can survive 300v
|
|
Back to top
|
|
Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob
|
|
Powered by e107 Forum System
|
