Mpp - Page 437 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

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 January 2012, 12:15 AM   #4361
diyAudio Member
 
Bksabath's Avatar
 
Join Date: Dec 2007
First lay out on 160 X 100 mm
Looks like single layers and no jumpers is possible.

Snags list
Rather long track return from LEDS
Pain in the but to tighten the power devices to the sinks.

Still loads of work to do but I would like to line up the power "transistors"
on the edge of the board.
I have a Pesante Dissipante which has already sinks fitted..

I can make boards much more simmetric than on firs lay out
Or maybe 2 boards for positive and negative rail.

I have used standard .6 W resistor size this will need changing maybe?
Attached Images
File Type: jpg Paradise SCH 1B.JPG (149.3 KB, 262 views)
File Type: jpg Paradise SCH 10001.JPG (194.1 KB, 264 views)
Attached Files
File Type: pdf Paradise Layout1B.PDF (37.6 KB, 34 views)
File Type: pdf Paradise Wiev 1B.PDF (43.6 KB, 30 views)

Last edited by Bksabath; 14th January 2012 at 12:17 AM.
  Reply With Quote
Old 14th January 2012, 12:23 AM   #4362
diyAudio Member
 
Bksabath's Avatar
 
Join Date: Dec 2007
On Trafos
I would like very much to use separate enclosure.

On atachments sorry for poor quality (limited file size)

I can email if needed...

PCB program I am using is Easy PC
Do not spend money on it as RS Components has a free download of same program which also has much beter library set
  Reply With Quote
Old 14th January 2012, 04:47 AM   #4363
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
You are working on the regulators that are already on Heseners board. Fine, we can use that for other projects. What we need is the components that go in the external box, Frans post 4336. That is what i call the pre regulator. For double mono we need two.
  Reply With Quote
Old 14th January 2012, 08:43 AM   #4364
loek is offline loek  Netherlands
diyAudio Member
 
Join Date: Feb 2005
Location: The Hague
Default Coils

Frans has 100uH instead of 100mH in his schematic.
Regards, Loek
  Reply With Quote
Old 14th January 2012, 09:05 AM   #4365
FdW is online now FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
Originally Posted by loek View Post
Frans has 100uH instead of 100mH in his schematic.
Regards, Loek
Ahhhh that is a mistake, there is also a link to the actual component in the post and the schema, these are correct.

The correct value is 100mH.

Sorry for that.

Regards,
Frans.
Attached Images
File Type: jpg MainsFilterTransRect.JPG (158.8 KB, 235 views)
  Reply With Quote
Old 14th January 2012, 09:13 AM   #4366
diyAudio Member
 
Onvinyl's Avatar
 
Join Date: Aug 2002
Location: Germany
Hi Frans,
why do you use two bridges? Since we use a shunt reg, both polarities would sink the same current, so no imbalance can occur.

Rüdiger
__________________
"I can feel what's going on inside a piece of electronic equipment. I have a sense that I know what's going on inside the transistors." Robert Moog
  Reply With Quote
Old 14th January 2012, 10:04 AM   #4367
MRupp is offline MRupp  Germany
diyAudio Member
 
MRupp's Avatar
 
Join Date: Dec 2003
Location: Frankfurt area
Hello Frans,

Is there a reference to the original article with the transformer plus common mode choke before the rectifiers, on the soundhost pages I only see general info on transformers.

Btw, in a bridge you have always 2 diodes in series, and also the snubbers if you place them across each diode. You can therefore replace four RC snubbers with a single one. Also, the snubber resistor value needs to be in the right ballpark to be effective. I would refer to the classic Hagermann article with formulas but I have no idea how the extra choke interferes with the transformer
__________________
Martin Rupp
  Reply With Quote
Old 14th January 2012, 10:59 AM   #4368
FdW is online now FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
Originally Posted by Onvinyl View Post
Hi Frans,
why do you use two bridges? Since we use a shunt reg, both polarities would sink the same current, so no imbalance can occur.

Rüdiger
It's just the way I use to do it. Normally I will use bridges like these:
3N255 Fairchild Semiconductor Bridge Rectifiers

They are 30 cents each and are (unavoidable) bridges and they sit here in a little box, ready to use.

Quote:
Originally Posted by Onvinyl View Post
Hi Frans,
why do you use two bridges? Since we use a shunt reg, both polarities would sink the same current, so no imbalance can occur.
Designing a 'high end' and high quality power supply should not compromise anything, having separate bridges for both supplies is a sign of quality that should not be removed (just to spare a few euro's).

Quote:
Originally Posted by Onvinyl View Post
Hi Frans,
why do you use two bridges? Since we use a shunt reg, both polarities would sink the same current, so no imbalance can occur.
Bottom line, this is the way that I would do it

Regards,
Frans.
  Reply With Quote
Old 14th January 2012, 11:03 AM   #4369
FdW is online now FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
Originally Posted by MRupp View Post
Hello Frans,

Is there a reference to the original article with the transformer plus common mode choke before the rectifiers, on the soundhost pages I only see general info on transformers.

Btw, in a bridge you have always 2 diodes in series, and also the snubbers if you place them across each diode. You can therefore replace four RC snubbers with a single one. Also, the snubber resistor value needs to be in the right ballpark to be effective. I would refer to the classic Hagermann article with formulas but I have no idea how the extra choke interferes with the transformer
No there is not, this is what Joachim and I (and others) do think will be a good, solid and high quality 'raw' power supply (pre regulator). The reference is intended to give some information (for those that need it) about wiring (and other) issues.
  Reply With Quote
Old 14th January 2012, 11:03 AM   #4370
diyAudio Member
 
Onvinyl's Avatar
 
Join Date: Aug 2002
Location: Germany
Hi Frans,
it's ok for me when you say it's your way, but it ain't, when you say it's the best, which it isn't (has been a topic at diyaudio now and then).

Rüdiger
__________________
"I can feel what's going on inside a piece of electronic equipment. I have a sense that I know what's going on inside the transistors." Robert Moog
  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



New To Site? Need Help?

All times are GMT. The time now is 07:38 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