Go Back   Home > Forums > Amplifiers > Power Supplies

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 14th December 2012, 08:11 PM   #3591
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia new Europe state
Changed 2SK117GR still LED don't lit, checked LED with battery and lits, I will change IRF840
  Reply With Quote
Old 14th December 2012, 08:22 PM   #3592
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Something very wrong is going on there. Something with grounding possibly, and early in the configuration. Make it all grounded or all floating, not half grounded, half floating. That doubler if grounded at totem capacitors mid point and all further caps return there is a +/- source, if at the bottom and all further caps return there is a + polarity source.
  Reply With Quote
Old 14th December 2012, 08:24 PM   #3593
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Was there a fuse this time you took out the Caddock?
  Reply With Quote
Old 14th December 2012, 08:29 PM   #3594
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia new Europe state
Quote:
Originally Posted by Salas View Post
Was there a fuse this time you took out the Caddock?
Was when connected without fuse.
  Reply With Quote
Old 14th December 2012, 08:31 PM   #3595
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia new Europe state
Changed IRF840 and LED don't lit (it's very strange) reg. at the input have 365VDC, I will check R11 1K trimmer.
  Reply With Quote
Old 14th December 2012, 09:11 PM   #3596
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia new Europe state
Verified both trimmers: 1K is good works OK, 200R is burned measured with DVM wiper to ground DVM and both sides reads Megs, changed & tested the reg again LED don't lit Vout 0VDC.
  Reply With Quote
Old 14th December 2012, 09:20 PM   #3597
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia new Europe state
When testing the reg all is floating gnd: the psu & the reg.
  Reply With Quote
Old 14th December 2012, 09:27 PM   #3598
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Isn't there 310-320VDC available without doubling to test for 300V out? Then change all semis including led. Use fuses everywhere. Start with everything floating, ground at one point only, see when fuses are taken out, debugging steps in other words. When the whole config as it is makes its 300 OHM RC cell part in PSU break like being hit with lightning, don't connect up the reg again and again without fusing or reconfiguring, else only same damages will occur.
  Reply With Quote
Old 14th December 2012, 09:29 PM   #3599
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Quote:
Originally Posted by merlin el mago View Post
When testing the reg all is floating gnd: the psu & the reg.
No new fireworks in the PSU 300 OHM, that way?
  Reply With Quote
Old 15th December 2012, 10:15 AM   #3600
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia new Europe state
Quote:
Originally Posted by Salas View Post
Isn't there 310-320VDC available without doubling to test for 300V out? Then change all semis including led. Use fuses everywhere. Start with everything floating, ground at one point only, see when fuses are taken out, debugging steps in other words. When the whole config as it is makes its 300 OHM RC cell part in PSU break like being hit with lightning, don't connect up the reg again and again without fusing or reconfiguring, else only same damages will occur.
Yes I have tx 240VAC I will try, yesterday installed two fuses in series separated 2cm 100mA 250VAC, OK first all floating, gnd at only one point, checking fuses.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Regs - Shunt vs Series richie00boy Solid State 42 14th March 2013 06:45 PM


New To Site? Need Help?

All times are GMT. The time now is 08:06 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2