Simplistic Mosfet HV Shunt Regs - Page 101 - diyAudio
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Old 1st March 2010, 08:34 PM   #1001
Salas is offline Salas  Greece
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Quote:
Originally Posted by pidesd View Post
how easy would it be to create a dual-rail version of this design? one could benefit from it in a electrostatic amp for instance, no?
I would mirror it for you guys but I have no symmetric HV gear to test it. Sorry.
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Old 1st March 2010, 08:43 PM   #1002
pidesd is offline pidesd  Canada
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that would be nice if you could post a schematic! i dont know how many would like a board for such a supply...but maybe enough people would like it to say the day so that a group buy can be organized. we never know.

any reason why it wouldnt work well?
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Old 1st March 2010, 09:15 PM   #1003
dggs is offline dggs  United States
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Originally Posted by Salas View Post
I would mirror it for you guys but I have no symmetric HV gear to test it. Sorry.
Please generate one if it's not too much trouble for you.
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Old 1st March 2010, 10:40 PM   #1004
Salas is offline Salas  Greece
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Quote:
Originally Posted by pidesd View Post
that would be nice if you could post a schematic! i dont know how many would like a board for such a supply...but maybe enough people would like it to say the day so that a group buy can be organized. we never know.

any reason why it wouldnt work well?
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Originally Posted by dggs View Post
Please generate one if it's not too much trouble for you.
Don't know what it might go wrong guys if I don't have an application to really test it on.
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Old 11th March 2010, 10:33 AM   #1005
regal is offline regal  United States
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Trying to figure out how to calculate the heat dissapation on the IRF840. I understand its Vout*iccsmA*X, what is X ?

Thanks
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Old 11th March 2010, 12:05 PM   #1006
massimo is offline massimo  Italy
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Vout * Iccs whith no load
Vout * (Icss - I drawn by the load) when loaded
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Old 11th March 2010, 12:24 PM   #1007
regal is offline regal  United States
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Originally Posted by massimo View Post
Vout * Iccs whith no load
Vout * (Icss - I drawn by the load) when loaded
I know that equation is on the first page but, the confusing thing is that quanghao's schematic shows i840= 0.2 Iccs, other posts have indicated this as well.
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Old 11th March 2010, 02:09 PM   #1008
Salas is offline Salas  Greece
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What Massimo said.
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Old 11th March 2010, 02:24 PM   #1009
regal is offline regal  United States
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What Massimo said.
10-4 and thanks.


Where do you guys buy these big 15W+ heat sinks? I can't find anything at digikey. Would like to buy a thick 3" finned strip that I could cut to size to fit in a typical tube amp chassis. My understanding is you want this shunt regulator in the same chassis as the tubes to keep the B+ wire short as possible.


This shunt reg I think will turn the headphone SET amp world upside down with a simple 6c45pi spud amp+OPT. Basically no electrolytics in the signal path anywhere. Exciting stuff. I love the way Salas brings new technology to improve ancient but wonderful designs.
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Old 11th March 2010, 02:37 PM   #1010
massimo is offline massimo  Italy
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I love the way Salas brings new technology to improve ancient but wonderful designs.


we too
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