Which one are you building after? J/KYours is most certainly the penultimate buffer in my book.

ZM - I am glad I've waited a bit and held off. OK, I've just been a huge fraidy cat. The latest updates to the pumpkin series are well worth the wait for me. As soon as I get some time to get to it, I WILL stop pestering you with questions and just get it. 😀
No buffer 😁Which one are you building after? J/K
ZM - I am glad I've waited a bit and held off. OK, I've just been a huge fraidy cat. The latest updates to the pumpkin series are well worth the wait for me. As soon as I get some time to get to it, I WILL stop pestering you with questions and just get it. 😀
Peppe
you don't need big Donut
proper one can be mounted at side wall of case, most left front
10VA is OK
you don't need big Donut
proper one can be mounted at side wall of case, most left front
10VA is OK
Thanks ZM. I'll probably take a larger cabinet in order to put inside also the miniPearl with the same PSU
A bit higher than IronPre: +/-15Vwhat are rail voltages for Mini Pearl?
Just to clarify, Iron pre is 15 and mini pearl 24?A bit higher than IronPre: +/-15V
Finishing up a perfboard version of your Pumpkin-style buffer tonight. Hope to post success pics tmrw 🤞
I’ve not played with the range of the Gemini reg from the Iron Pre, but guessing I can get close enough to 12V. Or can swap resistors to make range.
Sounds great! Iq is just a touch below 20ma and using those 15v rails. Hope to measure some tmrw, but it sounds quiet and ‘sure-footed.’ That could easily be confirmation bias and the notion of using 3x the jfets, but I’m ok with that 🙂
Attachments
15V here, 15 on MiniPearl. Pearl is 24, mini 15...naah
15V is fine
you cheated ....... somehow I meant that you're going with 2SK2145Sounds great! Iq is just a touch below 20ma and using those 15v rails. Hope to measure some tmrw, but it sounds quiet and ‘sure-footed.’ That could easily be confirmation bias and the notion of using 3x the jfets, but I’m ok with that 🙂

15V here, 15 on MiniPearl. Pearl is 24, mini 15...
when you're ready, just buzz, so we can compute which programmed current for shunt regs is OK, to feed both I. Pre and Mini Pearl
this was for fun - 2145 version is next up, when parts arrive. 🙂you cheated ....... somehow I meant that you're going with 2SK2145![]()
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