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Old 25th December 2002, 06:49 PM   #1
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Question Aleph-X parts list

Grey and/ or John Inlow,

I got the boards yesterday in the mail, thanks John.

I do have a question. If I pull down the schematic Grey put out on 5/24/02, will the parts on the schem. match the board's screen? I tried to search for a parts list but found none under Aleph X.

Thanks and Merry Christmas,

Vince

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Old 25th December 2002, 09:20 PM   #2
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Merry Christmas, fella,
I never got around to posting a formal parts list...or at least I don't remember doing so. Probably should, I guess. Considering that I've got myself involved in the high-powered Aleph-X dingus, I'll have to dredge around and locate the schematic (the version I posted and the prototype had some differences...). If I can keep my focus, I'll get you up a shopping list.
As to what the boards take, I dunno. You'll have to ask the board guys. I'm not sure what path they chose.

Grey
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Old 26th December 2002, 01:03 AM   #3
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Default parts list

There's a parts list on the alpha pcb thread that follows Grey's original specs (fairly certain). The latter schematics I posted (same thread) include Grey's follow ups and are not posted in the parts list. If you use the latter schematics you'll need to modify the parts list. The only changes are the two resistors that accompany V2.

John
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Old 26th December 2002, 01:42 AM   #4
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Default parts list

here......
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Old 26th December 2002, 12:59 PM   #5
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You guys rule!

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Old 26th December 2002, 01:40 PM   #6
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the parts price would also be nice
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Old 26th December 2002, 03:27 PM   #7
grataku is offline grataku  United States
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Bricolo
should we buy the parts for you, too??


A note on the part list: R19-29 should be 20 K max (per Nelson comment) I am using 10K. 68k is too much.

the FDB res can even be 200K and resistor to GND 100 ohms.
5 or 10 pf in the feedback loop should work.

The original IRFP044 should be better here. They have higher transconductance. IRFP140 should work as well.
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Old 26th December 2002, 03:45 PM   #8
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would be nice
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Old 26th December 2002, 04:36 PM   #9
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Default what happens...

Hi grataku,

What happens if you run 68k on R19/29?
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Old 26th December 2002, 08:26 PM   #10
grataku is offline grataku  United States
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What happens if you parallel a 100 ohm and a 1000 ohm resistors? You can get rid of the 1k ohm because it does almost nothing.
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