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Registered Member #3411
Joined: Sat Nov 13 2010, 08:25PM
Location:
Posts: 33
SCR at 10-30khz? You can forget it I believe. Once switched on, an SCR turns off when current flowing through it drops below a certain threshold. Its fairly difficult to extinguish the scr... 50A isnt much either..
What you are looking for is probably an IGBT. Or a high powered MOSFET. Then again, its hard to switch AC current with just one semiconductor, you will have to use two of them?
Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
If I have to use two or four that is fine. I would prefer a half-bridge setup as this is easier. I want to make a scr power controller. I know they are used for industrial power control for an induction heater.
Maybe I am using the wrong switching frequency.
I have already built an igbt converter. I think a scr would be better.
So, not knowing much about SCRs, what model would I need?
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
But, i have some experience with the SK065K SCR, it is 1kv and 65-70 amp (i guess that depends on the lead style). 950 amp is the peak pulse, which i have use 5 parallel sk065k's to switch an 800v 1950uf bank into a dead short with short wires with no problem at 1.5v on the gate (D cell).
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SCRs
