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Re: [PSUBS-MAILIST] PWM Controllers
There is a great book on the subject called Electricity 1-7 by...Uh, I forget.
Anyhow, it is a very readable book that focuses on basic power electronics.
Warren.
>
> 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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