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- Newsgroups: sci.electronics
- Path: sparky!uunet!clsi!kevin
- From: kevin@clsi.COM (Kevin Cameron)
- Subject: Re: A much better power inverter design
- Message-ID: <1992Sep11.203625.6586@clsi.COM>
- Originator: kevin@dubhe
- Sender: usenet@clsi.COM
- Organization: CAD Language Systems Inc.
- References: <BuE4p8.5Bq@acsu.buffalo.edu>
- Date: Fri, 11 Sep 92 20:36:25 GMT
- Lines: 24
-
-
- In article <BuE4p8.5Bq@acsu.buffalo.edu>, v064mb9k@ubvmsb.cc.buffalo.edu (NEIL GANDLER) writes:
-
- > So most manufactuers use mosfet power supplies
- > that step up the 12vdc to higher levels by first providing a 60hz
- > oscillating signal and using power mosefets to switch the 12v power
- > to a step up power transformer which results in a larger square wave ac
- > voltage output.
-
- - it will probably be at a much higher frequency than 60Hz e.g. 50kHz
-
- > ... But the mosfets although
- > amazing devices have internal resistances that cause them to heat up a lot
- > under heavy current loads.
-
- But you can just put more in parallel if you need a lower resistance, that
- will be more reliable than relays.
-
- Kev.
- --
- Kevin Cameron CLSI, Suite 100, 5457 Twin Knolls Rd., MD 21045, USA
- kevin@clsi.com Tel: (USA) (410) 992 5700 (- 5709) X229
- uunet!clsi.com!kevin Fax: (410) 992 3536
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