FET = field effect transistor
SCR = silicon controlled rectifier
--John
"Dale A. Raby" <publisher@thegreenbayweb.com> wrote:
Militarese translation:
LT = Lieutenant
MRE's = Meals Rejected by Ethiopians (US soldiers and sailors eat 'em though)
AWOL = Absent WithOut Leave
SOL = Shit Outa Luck
Now... I'd kinda like to know what FET's SCR's etc are as well!
On Mon, 2003-01-20 at 19:34, Chris Nugent wrote:Would someone mind yelling down to the little people and explaining what exactly FET's, SCR's, IGBT's ARE? And perhaps a nod in the direction of where one can pick up the basics of what is being talked about? My LT told me I had to help with the MRE's because the cook was AWOL, and if I don't figure this out I'll be SOL and my sub will be DOA.
Thanks,
Nuge
Subscuba@aol.com wrote:At least, and a bridge is what I would go with. You would probably have to parallel several in each leg of the bridge to avoid dissipation problems.
There are a number of ICs on the market to do the drive functions. I think ONSEMI has one. You would have to do the power stages. Layout of the power stages are the bear.
I would suggest IXYS as a starting vendor for the FETs. I think their site is "WWW.IXYS.com" they are not the only vendor.
Ken Martindale
One other note on the price issue you brought up, though. A
reversible speed controller requires a FET H bridge, which means
twice the FETs. A forward only could be made for $5.00. A good
reversible would easily hit $10.00.
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Dale A. Raby
Editor/Publisher
The Green Bay Web
http://www.thegreenbayweb.com