OpenServo.com

[guru]

I was doing some research on FETs for Bidirectional Bus switching and found this item:

about FredFETs:
http://en.wikipedia.org/wiki/FREDFET

A 200v 1.6A FredFET (thats 1.6A at 200v!):
http://www.irf.com/whats-new/nr040219.html

Also, I found the wiki page for FET transistors interesting:
http://en.wikipedia.org/wiki/Field_effect_transistor

C

[jamma]

Interesting technology. If you've got a high voltage application, you should also look into IGBT technology. However, my guess is most people who scale up the OpenServo hardware will need H-bridges that handle a lot more current (dozens of amps) at relatively low voltages (~24V). Here, a more interesting datasheet would be for the IRL3103. It's used in speed controllers that are popular with the fighting robot crowd (of which I am a member).

http://www.irf.com/product-info/datasheets/data/irl3103.pdf

[guru]

Well, ...hggrmmpph...maybe if you are making a 50 foot robot the likeness of yourself, like Michael Jackson is, you might need a FredFET. I vote to rename Fred to Jackson and call it the JacksonFET.

Yes, I cant imagine needing a 120v FET...

Colin