IXTH20N50D Depletion Mode Mosfet Group Buy - diyAudio
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Old 22nd October 2009, 02:18 PM   #1
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Default IXTH20N50D Depletion Mode Mosfet Group Buy

I am opening a thread for a group buy based on NP demonstration of a Depletion Mode Mosfet amp demonstrated at BA2009 that I thought sounded pretty good. The amp has no name yet, and is still a design in progress. But I thought I would get ahead ofthings and open up this thread to DISCUSS the AMP and the group buy. It's a minimum order of 60 at Digikey, and that would make about 30 amps, assuming nobody blew one. I would like to get this to a 100 units or more, and close the GB around X-MAS time.

If I run the group buy, I will likely charge an extra buck or two per FET for a DIYAudio donation, charge $5 shipping USD unless you order a lot, won't offer matching, and will write the value of the mosfet on a custom form if it's going overseas.
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Old 22nd October 2009, 02:26 PM   #2
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Old 22nd October 2009, 02:27 PM   #3
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Here is a spreadsheet I will use to track for those who want in. No Wiki for me.

http://spreadsheets.google.com/ccc?k...Uc1RoQlE&hl=en
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Old 22nd October 2009, 02:28 PM   #4
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I'm just an enabler. you must put yourself down
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Old 22nd October 2009, 03:33 PM   #5
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An important logistics update. I talked with Digikey customer service. These must be ordered in mulitples of 60. So it may behove me/us to make order runs once the 60 is met, then run another once the second 60 is met. Make sense?
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Old 22nd October 2009, 03:36 PM   #6
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Quote:
Originally Posted by Tea-Bag View Post
An important logistics update. I talked with Digikey customer service. These must be ordered in mulitples of 60. So it may behove me/us to make order runs once the 60 is met, then run another once the second 60 is met. Make sense?
That sounds very reasonable to me. I added myself to your spreadsheet.

Thanks,
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Old 22nd October 2009, 03:59 PM   #7
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This thread may be of interest, too, although not an NP design.

Two simple Current Amplifiers for low impedance loads
 
Old 22nd October 2009, 04:05 PM   #8
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Old 22nd October 2009, 04:59 PM   #9
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...If I run the group buy, I will likely charge an extra buck or two per FET for a DIYAudio donation, charge $5 shipping USD unless you order a lot,...
I would hope you don't, or at least reconsider that idea. Not that I don't want to donate to diyAudio but, that I want about 20 devices and that raises the price of ea. device substatially by forcing me to donate $20-$40 at Christmas time? Now I understand where your coming from with "willingness to put the money on the table" in the other J2 post. I would hope that you would at least be donating my $40 in my name and not yours?
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Old 22nd October 2009, 05:17 PM   #10
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It will likely be 15-16 a pair.
Flg, your more than willing to take over the GB and charge less.

But I am interested in small fee to keep Diyaudio running, and by an extra few to have available in case someone blows one up.
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