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 29th December 2011, 05:12 PM   #2261
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic Mosfet HV Shunt Regs
See if you have long cables to the regulators, put a capacitor across their inputs.
  Reply With Quote
Old 29th December 2011, 05:20 PM   #2262
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 Salas View Post
Merlin see what's wrong feeding, grounding, or loading the regs. Something's fishy when two different ones give smoke.
I tested again the separate PSU and seems all OK

CLC, the last C is in the same quanghao reg 300uF
Attached Images
File Type: jpg DSC00052.jpg (524.7 KB, 468 views)
  Reply With Quote
Old 29th December 2011, 05:23 PM   #2263
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
last C in the reg, BTW the cable between PSU & reg is 1 meter.
Attached Images
File Type: jpg DSC00053.jpg (440.0 KB, 429 views)
  Reply With Quote
Old 29th December 2011, 05:25 PM   #2264
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic Mosfet HV Shunt Regs
Using so heavy last capacitor, why? Are your fins insulated between them? Maybe they touch?
  Reply With Quote
Old 29th December 2011, 05:34 PM   #2265
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
Simplistic Mosfet HV Shunt Regs
Ask again, did test with dummy first?
  Reply With Quote
Old 29th December 2011, 05:41 PM   #2266
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 Salas View Post
Using so heavy last capacitor, why? Are your fins insulated between them? Maybe they touch?
quanghao pcb caps are in parallel.

dvb-projekt connected without cap at the input reg.
  Reply With Quote
Old 29th December 2011, 05:42 PM   #2267
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
Ask again, did test with dummy first?
No I did test with dummy load because burned, wich value in ohms & watts?
  Reply With Quote
Old 29th December 2011, 05:49 PM   #2268
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
Simplistic Mosfet HV Shunt Regs
You burned the dummy load? 15k 10W is a good allrounder.
Also I think you know you shouldn' t test the regs without a load.
  Reply With Quote
Old 29th December 2011, 06:00 PM   #2269
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
NO I didn't burned the dummy load. Yes I know it's necessary to use a dummy load or the circuit, but the Puresound phono MM was going on perfectly well with other 240VAC tx, I only changed the tx so I supposed that all will go OK that's the reason I didn't used a dummy load but the reg was connected to the MM.

Last edited by merlin el mago; 29th December 2011 at 06:19 PM.
  Reply With Quote
Old 29th December 2011, 06:09 PM   #2270
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Dummy load ready for next regs.
Attached Images
File Type: jpg DSC00051.jpg (489.5 KB, 427 views)

Last edited by merlin el mago; 29th December 2011 at 06:16 PM.
  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 03:59 PM


New To Site? Need Help?

All times are GMT. The time now is 09:02 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki