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 May 2010, 04:45 PM   #1
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
Default Connecting 2 bridge rectrifier

Hi, advice needed

i got a question

1.
How to connect transformer 27vac - 0 - 27vac to get 54vac - 0
is there alright if i connect 27vac & 27vac (than i get to 54vac) ?
or there is a better way ?

2.
from this single transformer ( after i get 54v - 0 )
i want to connect with to 2 psu.
can i use 2 bridge rectrifier there

can i connect like this (below) ?
or there is a better way ?

................. + ................................. + .................
0.....~ ........1..........~ ------ ~ ..........2.........~ ...54
..................-....................................-..................

or i must connect like this

................. + ................................. + .................
27....~.........1..........~ ------ ~ ..........2.........~...27
..................-....................................-..................

1 = First bridge rectrifier
2 = second bridge rectrifier
----- = jumper the bridge rectrifier

i really dont know bout this
please help me

Last edited by Pocoyo; 24th May 2010 at 05:12 PM.
  Reply With Quote
Old 24th May 2010, 05:21 PM   #2
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
for the picture 2
where 0 must connect ?

................. + ................................. + .................
27....~.........1..........~ ------ ~ ..........2.........~...27
..................-....................................-..................

please help me
  Reply With Quote
Old 24th May 2010, 05:28 PM   #3
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
Which Better
to connect 2 psu with 1 bridge rectrifier or 2 bridge rectrifier ?
  Reply With Quote
Old 25th May 2010, 06:07 PM   #4
diyAudio Member
 
Join Date: May 2008
Quote:
Originally Posted by Pocoyo View Post
How to connect transformer 27vac - 0 - 27vac to get 54vac - 0
is there alright if i connect 27vac & 27vac (than i get to 54vac) ?
Yes.

Quote:
Originally Posted by Pocoyo View Post
or there is a better way ?
No, there is only one way to do it.

Quote:
Originally Posted by Pocoyo View Post
from this single transformer ( after i get 54v - 0 )
i want to connect with to 2 psu.
can i use 2 bridge rectrifier there
None of your drawings will work. The rectifiers must be in parallel on the AC side, not in series.
If you want to get 2 separate DC circuits, 2 rectifiers have a slight theroretical advantage. In practice you won't notice much difference. If you want to connect the DC rails together again, the way it looks in your schematic, 1 rectifier is better.
__________________
If you've always done it like that, then it's probably wrong. (Henry Ford)
  Reply With Quote
Old 26th May 2010, 12:41 PM   #5
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
Quote:
Originally Posted by pacificblue View Post
Yes.


No, there is only one way to do it.


None of your drawings will work. The rectifiers must be in parallel on the AC side, not in series.
If you want to get 2 separate DC circuits, 2 rectifiers have a slight theroretical advantage. In practice you won't notice much difference. If you want to connect the DC rails together again, the way it looks in your schematic, 1 rectifier is better.
Thanks for your advice pacific blue

1
i will connect 27v with 27v to get 54v

2
Yes i want to get 2 separate dc circuit
my friend use one rectrifier and get hummm
i will try like this

................. + ................................. + .................
0......~......Rec1..........~ ------ ~ .....Rec2.....~ ....54
..................-....................................-..................

Thanks once again pacific blue
Best regards, jeffry
  Reply With Quote
Old 26th May 2010, 06:49 PM   #6
diyAudio Member
 
Join Date: May 2008
Two rectifiers will probably not solve the hum issue, because you have to connect both V- to GND.

Click the image to open in full size.
__________________
If you've always done it like that, then it's probably wrong. (Henry Ford)
  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
Reopening an unfinished debate: Dual bridge vs. Single Bridge xiphmont Chip Amps 15 26th February 2008 07:22 PM
The difference of Push-pull,Half-bridge,Full-bridge digi01 Chip Amps 0 8th September 2006 02:10 AM
Can anyone help me understand why my PS has a bridge within a bridge? schematic enc qboneus Power Supplies 5 5th March 2006 12:34 PM
Whats the difference between full bridge and half-bridge SMPS ? skaara Class D 6 3rd February 2005 07:23 PM


New To Site? Need Help?

All times are GMT. The time now is 08:35 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