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Old 28th October 2011, 06:54 PM   #771
vdi_nenna is offline vdi_nenna  United States
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Stefanobilini and All,

It's been discussed elsewhere that the IRFP9240 can cause distortion or is a bad choice for a CCS mosfet? Is this a concern in this design? Would a Fairchild P channel mosfet be a better choice?

F5 power amplifier

Mr Pass goes on to say that some people actually pefer the IRF9240 to the Fairchild FET.
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Old 28th October 2011, 07:04 PM   #772
woody is offline woody
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But I don't think Nelson is discussing it's use as a ccs. The F5 does not have a CCS.
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Old 28th October 2011, 09:51 PM   #773
stefanobilliani is offline stefanobilliani  Italy
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But I don't think Nelson is discussing it's use as a ccs. The F5 does not have a CCS.
That's correct . For a current source the IRFP9240 should be pretty good , and afaik it is the device implemented for the F2 current source ( but also F1 ) . Actually that is the current source arrangement I am listening from a week or so , and imo it is ok .
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Old 28th October 2011, 10:04 PM   #774
vdi_nenna is offline vdi_nenna  United States
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Quote:
For a current source the IRFP9240 should be pretty good
That's great, because I have lots of them!
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Old 28th October 2011, 10:25 PM   #775
stefanobilliani is offline stefanobilliani  Italy
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That's great
Indeed
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Old 29th October 2011, 09:10 AM   #776
stefanobilliani is offline stefanobilliani  Italy
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That's great, because I have lots of them!
By the way I am using Fairchild here .
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Old 3rd November 2011, 11:58 AM   #777
tca is offline tca  Portugal
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I've done this little fellow:

Click the image to open in full size.

Inspired by Zen, see thread here.
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Old 3rd November 2011, 06:17 PM   #778
vdi_nenna is offline vdi_nenna  United States
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Got the 085s from Tea-bag the other day. Great price, nicely packed and quick delivery!

Thanks Tea-bag! Looking forward to using them soon on the Delite-CCS!

Vince
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Old 3rd November 2011, 10:04 PM   #779
stefanobilliani is offline stefanobilliani  Italy
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Originally Posted by vdi_nenna View Post
Got the 085s from Tea-bag the other day. Great price, nicely packed and quick delivery!

Thanks Tea-bag! Looking forward to using them soon on the Delite-CCS!

Vince
Just finished to set up one channel with the SJEP120R100 from the previous schematic with just one more resistor . Works well and good sound also .
I am just wondering what a marvelleous amp will this come with feedback and also the aleph current source :-)

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Old 3rd November 2011, 10:19 PM   #780
vdi_nenna is offline vdi_nenna  United States
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If not using light bulbs, can we call it the Zen Ten?
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