SSLV1.1 builds & fairy tales - Page 50 - diyAudio
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 10th October 2011, 09:05 PM   #491
diyAudio Member
 
Join Date: Sep 2008
Many thanks. Can I leave the 4700uF cap in place at these currents?
Incidentally, do you hand out degrees after a few years of this?
Chris
  Reply With Quote
Old 10th October 2011, 09:18 PM   #492
Salas is online now Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Try with the 4700 first, technically it has the current. Just because your trafo is small better not pulse the thing hard.

If handing out degrees, would lead me to legal battle with AC/DC for ''Back In Black'' title.
  Reply With Quote
Old 11th October 2011, 07:56 AM   #493
PET-240 is offline PET-240  Australia
diyAudio Member
 
Join Date: Feb 2010
Location: Brisbane Northside
Heya Tea Bag,

Parts showed today, haven't opened them yet, but package looks fine.

Many Thanks, hope the bags show up for you soon!

Cheers,

Drew.
P.S. anyone know the CCS settings for a TDA DAC?
  Reply With Quote
Old 11th October 2011, 09:31 AM   #494
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by Backbones View Post
Incidentally, do you hand out degrees after a few years of this?
Standard Grade or GCSE in electronics maybe.
__________________
regards Andrew T.
  Reply With Quote
Old 11th October 2011, 10:19 AM   #495
PET-240 is offline PET-240  Australia
diyAudio Member
 
Join Date: Feb 2010
Location: Brisbane Northside
I prefer centigrade.....my winter was shorts and shirt for most of it. In my experience pieces of paper are just that, doesn't mean the person that has it is any good with it!
Don't know what qual's Salas has, but he be one of the most helpful gent I've found anywhere, I'm a electrician by trade, self employed in Industrial Machines Contracting, would love to offer the service you guys do.
Thanks Very Much!
  Reply With Quote
Old 11th October 2011, 10:20 AM   #496
diyAudio Member
 
Join Date: Sep 2008
I'd take a GCSE in electronics anyday over a degree in interior decoration at the University of LaLa! Trouble is you can probably get more money as an interior decorator.
Anyway back to the real business of this thread. One more diode and we have a working PSU fixed at 12V. The mosfet, however, is running a little hotter than I would like (about 55deg) so I'll have to find a bigger heatsink.
Thanks for all the help.
Chris
  Reply With Quote
Old 11th October 2011, 10:29 AM   #497
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Is 55degC a problem?
What is the temperature de-rated SOA of the device if Tc=55degC?
What is the worst case operation for this device? Will it simply rise in temperature, but more importantly survive without damage during this worst case event?
__________________
regards Andrew T.
  Reply With Quote
Old 11th October 2011, 10:40 AM   #498
diyAudio Member
 
Join Date: Sep 2008
The device will last longer at lower temperatures surely? Operating junction and storage temp range is -55 to +150degC, however, I don't know the significance of that data from a practical point of view.
Chris
  Reply With Quote
Old 11th October 2011, 10:45 AM   #499
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
I have some solid state electronics from the 60s and they still work. Is reliability/lifetime an issue if the device always operates within it's specification limits?
__________________
regards Andrew T.
  Reply With Quote
Old 11th October 2011, 10:51 AM   #500
diyAudio Member
 
Join Date: Sep 2008
Not really. As I am new to this game I am minded to stay about the 55c level because of Nelson Pass designs and I know no better. Going back to the FM4 there was a 7812 reg in there taking a 22VDC input from the tuner's transformer and it didn't have a heatsink. It must have run very hot indeed and there are references to problems with the reg in the repair manual, however, it did run for very long periods all the same.
Chris
  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
GB Thread for Salas SSLV1.1 BiB shunt reg Tea-Bag Group Buys 1464 20th July 2014 01:54 PM
WTB : Salas SSLV1.1 BiB shunt CaNNA3IS Swap Meet 1 24th November 2013 09:43 AM
FS : 2 x Salas SSLV1.1 BiB PCB + 6 x IRF MiniKits korben69 Swap Meet 6 2nd July 2013 09:32 AM
Some VX.2 Builds CSS/XBL CSS 0 11th April 2013 05:34 PM
so who here builds amps amp builder jb Tubes / Valves 29 15th July 2005 08:23 PM


New To Site? Need Help?

All times are GMT. The time now is 04:21 AM.


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