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Old 15th November 2012, 05:22 PM   #2791
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally Posted by buzzforb View Post
Yup, I just didnt have my glasses on. Using those big number threw me. Looks like 4-5V range. I am ordering some to compare. Hopefully they will perform similarly and open up another option for others interested in the project. Certainly very nice looking curves. May not be as good as SS, but could be.

CMF10120D Cree, Inc. | Mouser
I was looking at the test VGS....oops.
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Last edited by Tea-Bag; 15th November 2012 at 05:29 PM.
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Old 15th November 2012, 05:35 PM   #2792
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Good that I did not look at all!
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Old 15th November 2012, 05:36 PM   #2793
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from previous datasheet
somewhat easier to see
Attached Images
File Type: jpg Cree CMF10120D Rev A datasheet.jpg (63.9 KB, 326 views)
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Old 15th November 2012, 05:45 PM   #2794
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The transconductance appears to be very low at about 3.5S at Id=10A. I haven't estimated the input capacitance.

Quote:
Originally Posted by buzzforb View Post
Yup, I just didnt have my glasses on. Using those big number threw me. Looks like 4-5V range. I am ordering some to compare. Hopefully they will perform similarly and open up another option for others interested in the project. Certainly very nice looking curves. May not be as good as SS, but could be.

CMF10120D Cree, Inc. | Mouser
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Old 15th November 2012, 06:48 PM   #2795
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Originally Posted by lhquam View Post
The transconductance appears to be very low at about 3.5S at Id=10A. I haven't estimated the input capacitance.
The curve is not linear at ~1.5 A. How does it compare side by side with that of R100 or other MOSFETs made popular by Mr. Pass?

N.B.
  • The curve of Idss v.s. Vgs for R100 appears relatively more linear [eyeballing] than for Cree semi.
  • The curve of Idss v.s. Vgs for IRFP240 is different from both of the above. Nonetheless quite linear in the idle bias region 0f 1-2 A.

Last edited by Antoinel; 15th November 2012 at 07:03 PM. Reason: Tweak
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Old 15th November 2012, 07:13 PM   #2796
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Originally Posted by Zen Mod View Post
what's the price ?

edit:

dumb zm

didn't clicked on link , thought it was for datasheet , not to Moussss
Were even...well, not really. Thanks for helping a DoDo.
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Old 15th November 2012, 07:15 PM   #2797
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Plot it at different Vds and datasheet posted by ZM looks good to me. Could be viewing it with same glasses as before.
If not xformer, slap a diff pair in front for more gain and you might have soemthing nice. As a matter of fact, may be worth trying in the AJ. ACA is also an option.
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Last edited by buzzforb; 15th November 2012 at 07:17 PM.
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Old 15th November 2012, 07:57 PM   #2798
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surprise....

i tried to get down k2 with the Edcor with the trim pots and it did not work. The smallest distance I could manage was 10db. I tried both secondaries lower and upper.

So the Edcor seems to have a k2 dominance build in and you can not really shape your sound man....
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Old 15th November 2012, 08:04 PM   #2799
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G

what's going on with Iskras ?

you're not commenting on them because they're unavailable to others?
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Old 15th November 2012, 08:08 PM   #2800
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exactly....!

but nobody answer even on the availables.....

I have to wait four weeks.....
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