help with Powersupply - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 6th June 2003, 11:16 AM   #1
iceman is offline iceman  Sweden
diyAudio Member
 
Join Date: Jun 2003
Location: Gothenburg
Send a message via MSN to iceman
Default help with Powersupply

Hello !!

Sorry if you think this question is stupid, but i'm a complete newbie to this.

I want to build a PSU for my amp that I build.
I got this transformers already:
2 x transformer (primary=220V, secondary=2x18V)

I want to feed my amp with +- 45-50V.
How do i do ??, Please help !!
  Reply With Quote
Old 6th June 2003, 01:04 PM   #2
raindog is offline raindog  Romania
diyAudio Member
 
raindog's Avatar
 
Join Date: May 2003
Location: Timisoara
Send a message via Yahoo to raindog
try this, it will give you +/- 50V
Attached Images
File Type: jpg psu.jpg (89.2 KB, 357 views)
  Reply With Quote
Old 6th June 2003, 01:59 PM   #3
iceman is offline iceman  Sweden
diyAudio Member
 
Join Date: Jun 2003
Location: Gothenburg
Send a message via MSN to iceman
Default question again

Your schema looks okey, but i cant find the zero(0) on each transformer?
  Reply With Quote
Old 6th June 2003, 04:36 PM   #4
iceman is offline iceman  Sweden
diyAudio Member
 
Join Date: Jun 2003
Location: Gothenburg
Send a message via MSN to iceman
Default Help with Powersuply

Sorry, now I seen it.
If I understand this right, then I should not use the 0 from the transformers!?
  Reply With Quote
Old 6th June 2003, 06:48 PM   #5
HighTec is offline HighTec  Croatia
diyAudio Member
 
HighTec's Avatar
 
Join Date: Mar 2003
Location: Sibenik, Croatia
Default ???

Hi.

Iceman...I'm little bit confused here.If I understood you well,you have a transformer with two separate secondary coils.If it is,wire them like shown bellow.But here is a suggestion.Order a transformer with 72V on secondary.Of course with a center tap.This will give you 2x50VDC.Make your life easy!
By the way(just in case)tell me the core ratings of your transformers.If you are not sure, write down the transformer dimensions.
Regards.
Attached Images
File Type: jpg untitled.jpg (11.2 KB, 299 views)
  Reply With Quote
Old 7th June 2003, 10:49 AM   #6
iceman is offline iceman  Sweden
diyAudio Member
 
Join Date: Jun 2003
Location: Gothenburg
Send a message via MSN to iceman
Default help with powersupply

HighTec

This is how my transformers look:
Attached Images
File Type: png psu.png (940 Bytes, 77 views)
  Reply With Quote
Old 7th June 2003, 01:24 PM   #7
HighTec is offline HighTec  Croatia
diyAudio Member
 
HighTec's Avatar
 
Join Date: Mar 2003
Location: Sibenik, Croatia
Thumbs up Ok

Hi.

Aha...ok!Use the S1 / S2 and leave center tap unwired.This will give you 36V.
You didn't mention transformers core ratings?
Regards.
Attached Images
File Type: jpg t1.jpg (5.9 KB, 231 views)
  Reply With Quote
Old 7th June 2003, 02:08 PM   #8
natten is offline natten  Sweden
diyAudio Member
 
Join Date: Feb 2003
Location: sweden
Default Re: ???

HighTec

If you connect it like the b) example and then rectifie it which voltages will you get? and will you get a GND
  Reply With Quote
Old 7th June 2003, 02:20 PM   #9
HighTec is offline HighTec  Croatia
diyAudio Member
 
HighTec's Avatar
 
Join Date: Mar 2003
Location: Sibenik, Croatia
Hi.

That's why I suggested Iceman to order a new transformer.
There is no way to get +/- 50VDC from a transformer he has.
I'm also sceptic about his transformer ratings!
About fig.(b) he will get 50VDC but without the common ground.
Cheers.
  Reply With Quote
Old 7th June 2003, 02:47 PM   #10
natten is offline natten  Sweden
diyAudio Member
 
Join Date: Feb 2003
Location: sweden
So you will get +/- Xv with example b. Can i use the ACground to ground it or can i make it in another way if i dont have a ground on the ac outlet
  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
0-30v 0-10a PowerSupply gev Power Supplies 16 24th May 2006 09:06 PM
PC PowerSupply gev Power Supplies 0 24th July 2005 02:00 PM
DC powersupply +-15V 2-3A JensRasmussen Solid State 9 22nd February 2004 10:42 PM
Powersupply Kongen Solid State 4 26th October 2003 04:19 PM


New To Site? Need Help?

All times are GMT. The time now is 05:13 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