Simplistic Mosfet HV Shunt Regs - Page 326 - diyAudio
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Old 8th October 2012, 10:03 PM   #3251
Salas is online now Salas  Greece
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Mesh 30's is the duck's guts. Not bad yours Merlin also. Nice pics guys.
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Old 8th October 2012, 10:07 PM   #3252
Salas is online now Salas  Greece
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Quote:
Originally Posted by 10y View Post
Thank you Salas, I was talking about SSHV (1). So will start with a c-l-c configuration with two parallelled choke for a 60 mA current max and 68 R ccs value. Is also possible to reduce current ccs consumption to a value below 20 mA? Thinkin' about tu use two SSHV1 in a single HV rail and stand below 30 mA max.



You will see the mine soon

Anto
Don't use less than 20mA for the reg itself, ups the Z, but yeah, if its like your choke is on edge for handling the total if you add for load too, what the heck, somewhat more Zo. Verify what you run there by VdropRset/RsetValue. Just because every led and fet ain't the same.
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Old 8th October 2012, 10:20 PM   #3253
10y is offline 10y  Italy
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Quote:
Originally Posted by merlin el mago View Post
Ciao,

Looks really good, Valvo are considered by many the best AZ1 mesh plate ever made so please pic of Valvo.

Cheers
Felipe
Done!

Not as good as the first but the red filament is magic!

ciao,

Anto
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File Type: jpg az1-valvo2.jpg (131.7 KB, 217 views)
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Old 8th October 2012, 10:23 PM   #3254
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Ciao Anto,

Phisicallly speaken seems more similar the Valvo to the Siemens than the Miniwat.

Grazie e ciao

Felipe
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Old 8th October 2012, 10:36 PM   #3255
10y is offline 10y  Italy
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Felipe,

in the same 220 V sec tx- graez- c-l-c- line the valvo shows 304 volt and the minivatt 280 volt " a vide"

Anto
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Old 8th October 2012, 10:37 PM   #3256
Salas is online now Salas  Greece
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We avoid too big pictures for everybody to see easily. I cut them to 1200.
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Old 8th October 2012, 10:50 PM   #3257
10y is offline 10y  Italy
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Quote:
Originally Posted by Salas View Post
Don't use less than 20mA for the reg itself, ups the Z, but yeah, if its like your choke is on edge for handling the total if you add for load too, what the heck, somewhat more Zo. Verify what you run there by VdropRset/RsetValue. Just because every led and fet ain't the same.
Thanks Salas for your suggestions.

Quote:
Originally Posted by Salas View Post
We avoid too big pictures for everybody to see easily. I cut them to 1200.
Ok Salas will do for the next

Anto
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Old 10th October 2012, 12:18 PM   #3258
disco is offline disco  Netherlands
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enjoying the low capacitance benefits of a mesh plate here?
BTW that one pictured is a perforated plate, mesh is built from loose wires.



Salas,

I felt the urge to update my three year old PCBs for SSHVSR-version1 with kelvin connections. The plan is to run 30cm (twisted +/-) wires to the load. Now I hesitated to put the zobel at the load or across Q3. Any changes when employing IRFP9140 instead?

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Last edited by disco; 10th October 2012 at 12:27 PM.
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Old 10th October 2012, 12:24 PM   #3259
Salas is online now Salas  Greece
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Across Q3 is its best place, and star gnd at its capacitor. No changes for IRFP140, and you can use IRF9620 for cheaper TO-220.
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Old 10th October 2012, 12:37 PM   #3260
disco is offline disco  Netherlands
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Another idea

When splitting the power part from the drive part, the driver would be exposed to less heat. Can the connection to R7 be streched to 30cm?

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Alright, not - as it would destroy the kelvin connection effect.
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Last edited by disco; 10th October 2012 at 01:04 PM.
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