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New Stasis front end
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Old 10th December 2020, 09:32 PM   #211
Zen Mod is online now Zen Mod  Serbia
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New Stasis front end
in fact, it's super easy

easier and more straightforward than, say, F5T ....... and even BA3 (even without P3 fiddling)

edit: give Pa few days off pressure, he's having some other obligations these days, and he'll give us guiding hand soon
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Last edited by Zen Mod; 10th December 2020 at 09:36 PM.
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Old 10th December 2020, 09:35 PM   #212
JSA1971 is offline JSA1971  Canada
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New Stasis front end
Quote:
Originally Posted by Dennis Hui View Post
I like to think the opportunity to build a Stasis will encourage some greenhorns
to try something outside their comfort zones.
I was thinking this exactly as Iíve been reading through the thread. Ive built the Aleph J, M2x, the B1 and the B1Korg. All of the build guides are excellent, and the support has been amazing. But Iím looking to grow my skills and wouldnít mind a bigger challenge, which this project if approved will fill.
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Old 10th December 2020, 10:11 PM   #213
6L6 is offline 6L6  United States
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New Stasis front end
For what it’s worth, this project will have, by design, an abbreviated guide. This project is intended for people with a little experience... at least one firstwatt built, for example.

As rails go up and current increases, it becomes easier and easier to let the magic smoke out with excitement and vigor.

That said, I’m sure this will be a very popular project and the community will jump in and help with enthusiasm!

Last edited by 6L6; 10th December 2020 at 10:14 PM.
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Old 10th December 2020, 10:18 PM   #214
konst is offline konst  United States
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Quote:
Originally Posted by 6L6 View Post
As rails go up and current increases, it becomes easier and easier to let the magic smoke out with excitement and vigor.

That is my new signature!
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Quote:
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As rails go up and current increases, it becomes easier and easier to let the magic smoke out with excitement and vigor.
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Old 10th December 2020, 10:31 PM   #215
JSA1971 is offline JSA1971  Canada
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New Stasis front end
Quote:
Originally Posted by 6L6 View Post
For what itís worth, this project will have, by design, an abbreviated guide. This project is intended for people with a little experience... at least one firstwatt built, for example.

As rails go up and current increases, it becomes easier and easier to let the magic smoke out with excitement and vigor.

That said, Iím sure this will be a very popular project and the community will jump in and help with enthusiasm!
Thanks 6L6! Looking forward to it.
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Old 10th December 2020, 10:39 PM   #216
woody is offline woody
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New Stasis front end
In the new front end what's the function of c9,r23 c7 r25 r28 and c8 r26 r28 c10 r 24 ?
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Old 10th December 2020, 11:33 PM   #217
Soundhappy is offline Soundhappy  France
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Updated DIY Stasis version post #1 nominal specyfications are ?
Kind regards
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File Type: jpg B6137967-B5C0-426D-AB3F-F5C60EC50045.JPG (120.7 KB, 453 views)
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Old 11th December 2020, 12:35 AM   #218
Zen Mod is online now Zen Mod  Serbia
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Quote:
Originally Posted by 6L6 View Post
For what itís worth,.....
Jim , is this OK , for ticking few boxes?
Attached Images
File Type: png Stasis FE pcb with more holes render copper.png (60.6 KB, 440 views)
File Type: png Stasis FE pcb with more holes render top.png (94.2 KB, 447 views)
File Type: png Stasis OS pcb Eagle with holes for FE.png (72.5 KB, 438 views)
File Type: jpg small angle bracket.jpg (57.0 KB, 435 views)
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Old 11th December 2020, 01:18 AM   #219
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New Stasis front end
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Originally Posted by woody View Post
In the new front end what's the function of c9,r23 c7 r25 r28 and c8 r26 r28 c10 r 24 ?
voltage biasing of cascoded (style) of Stasis OS

see enclosed sch, reposted from post #1

also, attached edited sch of new FE, added missing "C" pads (present on pcb), here for same purpose

Click the image to open in full size.

though, I need Papa's clarification of (reasons for) new time constant, introduced by R27 and R28, in series with C7 and C8, respectively
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File Type: jpg STASIS-FE-REV-SCH.jpg (73.3 KB, 191 views)
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Last edited by Zen Mod; 11th December 2020 at 01:21 AM.
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Old 11th December 2020, 01:49 AM   #220
gary s is offline gary s  Australia
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As can be seen in the photo of the test rig in post #1, and Nelson's email back to me about this, you simply do not load those components for non Cascoded (series) output stages - simple. Which I assume is how most builds will be done by the way. Maybe someone keen will attempt a cascoded O/S build.
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