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 24th January 2012, 04:32 PM   #2611
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
I would not pass HV down an umbilical, unless it were an armoured cable fixed at both ends.
I am resistant to passing LV down an umbilical where one end is connected to mains power.

There have been long threads discussing remote PSUs.
__________________
regards Andrew T.
  Reply With Quote
Old 24th January 2012, 05:13 PM   #2612
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Quote:
Originally Posted by AndrewT View Post
I would not pass HV down an umbilical, unless it were an armoured cable fixed at both ends.
I am resistant to passing LV down an umbilical where one end is connected to mains power.

There have been long threads discussing remote PSUs.
I have seen one thread you have been a part of. Why are sperate PSU's so popular if it is such a bad idea. The connectors would be powercon and the cable fully shielded. It works great on my Pass gear.
  Reply With Quote
Old 24th January 2012, 05:58 PM   #2613
RJM1 is offline RJM1  United States
diyAudio Member
 
Join Date: Jan 2010
Location: Titusville, Fl.
AndrewT:

I agree, I once worked for a video projector manufacturer who had this great idea to make a
video projector with a remote head assembly.You can imagine the problems they had trying to
get the 15 to 100khz sweep at 1000V, 5A peak, HV +35KV@1ma + the one volt (50 ohm) video signal X3 in a 20
ft snake.We could do it, but the snake cost more than the vidio projector.(late 1990's)

Notice: you don't see any.

Last edited by RJM1; 24th January 2012 at 06:08 PM.
  Reply With Quote
Old 25th January 2012, 01:59 AM   #2614
regal is offline regal  United States
diyAudio Member
 
Join Date: Jan 2004
Location: MD
Quote:
Originally Posted by AndrewT View Post
no.

earth leakage detection (elcb, rccb, etc) work by comparing the Live current to the Neutral current. If they don't balance within the detection/trigger limit, the breaker opens.

You have a perfectly good primary circuit that does not leak to earth and kill your self with the secondary circuit (they are isolated from each other) and the earth leakage will not change.
I can't imagine a B+ transformer or OPT where the secondary isn't connected to earth in a tube circuit, so I don't think the we can say the primary is isolated from the secondary?
  Reply With Quote
Old 25th January 2012, 06:12 AM   #2615
Tube747 is offline Tube747  Hong Kong
diyAudio Member
 
Join Date: Jan 2012
Can I modify either SSHV or SSHV2 to regulate circuit operating at 650-700VDC?
  Reply With Quote
Old 25th January 2012, 09:21 AM   #2616
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
I wouldn't give ideas for that. Not tried, dangerous to theorize, dangerous to practice.
  Reply With Quote
Old 25th January 2012, 09:28 AM   #2617
diyAudio Member
 
nicoch58's Avatar
 
Join Date: Oct 2004
Quote:
Originally Posted by regal View Post
I can't imagine a B+ transformer or OPT where the secondary isn't connected to earth in a tube circuit, so I don't think the we can say the primary is isolated from the secondary?
__________________
Sic58
  Reply With Quote
Old 25th January 2012, 11:30 AM   #2618
Tube747 is offline Tube747  Hong Kong
diyAudio Member
 
Join Date: Jan 2012
Default regulated the SG

Quote:
Originally Posted by Salas View Post
I wouldn't give ideas for that. Not tried, dangerous to theorize, dangerous to practice.
I guess it won't be a problem for SSHV2 to regulate the screen grid of a pair of EL34 in push pull circuit.
  Reply With Quote
Old 25th January 2012, 05:07 PM   #2619
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by regal View Post
I can't imagine a B+ transformer or OPT where the secondary isn't connected to earth in a tube circuit, so I don't think the we can say the primary is isolated from the secondary?
You can say all you like.
The Primary is isolated from the Secondary.
__________________
regards Andrew T.
  Reply With Quote
Old 29th January 2012, 09:13 AM   #2620
Tube747 is offline Tube747  Hong Kong
diyAudio Member
 
Join Date: Jan 2012
Salas,
Some says tube rectification will cause the input voltage variation to *any* regulator may result in it dropping out of regulation. That's why SS rectification is more preferable.

What about your SSHV2? Can it use with tube rectification and regulate 400V B+?

Thanks!
  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 07:40 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