Also following this design with interest. The Mosfet in the schematic 10N60C seems to be obsolete. Will this one work in its place?
https://www.mouser.com/ProductDetail/STMicroelectronics/STP10N60M2?qs=DqCdCwOw4/5AmMf4xasHww==
Is this based on the Tubelab UNSET, or am I confused?
https://www.mouser.com/ProductDetail/STMicroelectronics/STP10N60M2?qs=DqCdCwOw4/5AmMf4xasHww==
Is this based on the Tubelab UNSET, or am I confused?
That MOSFET isn’t rated for DC in the SOA so I’d look for one that can handle DC. 600v is unnecessary and RDS ON is not important in this application. 400v is more than sufficient. The 10N60 is still available.
I was unaware of TubeLab’s UNSET when I designed this and any similarities are coincidental.
I was unaware of TubeLab’s UNSET when I designed this and any similarities are coincidental.
There are similar bits, like the operation of the output tube in common g1, but apart from that is pretty different. There is no direct feedback (both DC and AC) from plate to g1, feels like a Schade-style feedback from plate to plate. Then the driving mosfet is not a follower, it is an amplifying stage. Then it has feedback from the output windings to the driving mosfet.Is this based on the Tubelab UNSET, or am I confused?
Thanks for pointing out the differences @jcalvarez. I see some similarities which I appreciate. Intriguing work gentlemen.
@Doug De Young, if you have not looked at it yet you might find the Tubelab UNSET development interesting. See here: https://www.diyaudio.com/community/threads/unset-beta-board-build.376124/page-29#post-7645393
@Doug De Young, if you have not looked at it yet you might find the Tubelab UNSET development interesting. See here: https://www.diyaudio.com/community/threads/unset-beta-board-build.376124/page-29#post-7645393
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