Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Simplistic Mosfet HV Shunt Regs
Simplistic Mosfet HV Shunt Regs
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th January 2012, 12:44 AM   #2511
Lazybutt is offline Lazybutt  France
diyAudio Member
 
Join Date: Mar 2009
Quote:
Originally Posted by Salas View Post
Very nice. I will try it out more later and I can include V3 calc with the SSHV1 evolution post linked from page 1 for everybody to can point to and have less questions. With your permission of course. Is that OK?
Of course that's OK!

Quote:
Originally Posted by Salas View Post
P.S. With the last included schematic ''current reference'' cells should read ''LEDS Voltage'' D1,D2,D3 to match I think. You also include a rectification & pre-filtering drops calculation section. Would be better to depict that front end example with a schematic too, so people will picture it better?
Yes, I'll try to do it tonight after work. Maybe you should wait till then before putting the link in the first page...? I'll post here once it's done.
  Reply With Quote
Old 9th January 2012, 12:46 AM   #2512
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic Mosfet HV Shunt Regs
Yep, will wait of course. No hurry.
  Reply With Quote
Old 9th January 2012, 08:04 AM   #2513
dadedady is offline dadedady  Greece
diyAudio Member
 
Join Date: Sep 2011
Location: Athens-Greece
Quote:
Originally Posted by Salas View Post
TL783 is 125V max. You floated it I suppose for the B+ of that SRPP.
125V is the limit between Vin and Vout. B+ was 220V and floated.
  Reply With Quote
Old 10th January 2012, 12:11 PM   #2514
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Changed SK170BL & MJE350 with old tx works OK 260Vout

Next step I will try with Bartolucci tx to see what's happen
Attached Images
File Type: jpg DSC00051.jpg (561.7 KB, 418 views)
  Reply With Quote
Old 10th January 2012, 01:42 PM   #2515
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
Simplistic Mosfet HV Shunt Regs
Default SSHV2 beta test

Another very successful best test for the SSHV2.
A few days ago, I received from Teabag one SSHV2 pcb to test. Quality is awesome as usual.
This morning got the last few parts missing and soldered it. Took less than two hours. Worked right away, no surprises. Current initially was on the low side, and it did not regulate properly. A few turns on the trimmer and everything was fine. Looks very stable, with minimal voltage drift. Of course, this can change inside a box.
Looks more bulletproof and more tolerant to mistakes than SSHV1.
Tried various Vin and Vout combinations on the high voltage side.
Current set a 55mA, but I have tested it up to 100mA.
Also heatsink for the 840 was a little oversized for testing. For the 10uF cap, I had to use two 20uF 250V in series, as I did not have anything else in my stash right now. Resistor was 17k.
Pic on the scope is AC full gain.

Many thanks to Salas and Teabag.
Attached Images
File Type: jpg IMG_1125.JPG (194.9 KB, 401 views)
File Type: jpg IMG_1123.JPG (211.1 KB, 384 views)
File Type: jpg IMG_1126.JPG (152.3 KB, 313 views)
  Reply With Quote
Old 10th January 2012, 01:45 PM   #2516
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
With Bartolucci tx also OK 260Vout 56mA
Attached Images
File Type: jpg DSC00051.jpg (486.1 KB, 302 views)
  Reply With Quote
Old 10th January 2012, 01:47 PM   #2517
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Quote:
Originally Posted by vgeorge View Post
Another very successful best test for the SSHV2.
A few days ago, I received from Teabag one SSHV2 pcb to test. Quality is awesome as usual.
This morning got the last few parts missing and soldered it. Took less than two hours. Worked right away, no surprises. Current initially was on the low side, and it did not regulate properly. A few turns on the trimmer and everything was fine. Looks very stable, with minimal voltage drift. Of course, this can change inside a box.
Looks more bulletproof and more tolerant to mistakes than SSHV1.
Tried various Vin and Vout combinations on the high voltage side.
Current set a 55mA, but I have tested it up to 100mA.
Also heatsink for the 840 was a little oversized for testing. For the 10uF cap, I had to use two 20uF 250V in series, as I did not have anything else in my stash right now. Resistor was 17k.
Pic on the scope is AC full gain.

Many thanks to Salas and Teabag.
That's a very good new, thanks George, Nick & Mike for your excellent work
  Reply With Quote
Old 10th January 2012, 01:51 PM   #2518
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic Mosfet HV Shunt Regs
High voltage stresses there and it went smooth. Good test job George.
  Reply With Quote
Old 10th January 2012, 01:51 PM   #2519
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic Mosfet HV Shunt Regs
Quote:
Originally Posted by merlin el mago View Post
With Bartolucci tx also OK 260Vout 56mA
  Reply With Quote
Old 10th January 2012, 01:54 PM   #2520
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic Mosfet HV Shunt Regs
Quote:
Originally Posted by merlin el mago View Post
That's a very good new, thanks George, Nick & Mike for your excellent work
Black proto group test board for the burns not to show much.
  Reply With Quote

Reply


Simplistic Mosfet HV Shunt RegsHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Regs - Shunt vs Series richie00boy Solid State 59 17th June 2017 04:59 PM


New To Site? Need Help?

All times are GMT. The time now is 09:25 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki