Smps 220vac / 13.8vcc For 100a - 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 4th July 2009, 06:25 PM   #1
diyAudio Member
 
Join Date: Feb 2009
Send a message via AIM to albert_emule Send a message via MSN to albert_emule Send a message via Yahoo to albert_emule
Default Smps 220vac / 13.8vcc For 100a

Hi everybody!

I want to make a power supply for my car audio system. For this, I need a 1.400W supply with 220Vac in and 13.8Vdc out 100A.
If anyone help me, I apreciate.

the pcb layout that was concebibo for symmetrical SMPS, being able to be 1 only:
http://img133.imageshack.us/img133/2966/placaprota.jpg


these photos, it is the toroides what I am using in the project:

http://img27.imageshack.us/img27/7297/dsc01240g.jpg

http://img89.imageshack.us/img89/5820/dsc01241x.jpg

http://img39.imageshack.us/img39/6488/dsc01242y.jpg

this one here, it is the schematic of the SMPS:
http://img17.imageshack.us/img17/4180/fullbridge.png


Thanks.
  Reply With Quote
Old 4th July 2009, 06:31 PM   #2
diyAudio Member
 
Join Date: Sep 2007
Pulling 100 A current out of the converter requires much thinking! For example the transformer windings will be very huge - even that leads to a large core. From your pictures it looked like the windings would not fit to your core. Do the calculations!
__________________
-Juha
  Reply With Quote
Old 4th July 2009, 06:46 PM   #3
diyAudio Member
 
Join Date: Feb 2009
Send a message via AIM to albert_emule Send a message via MSN to albert_emule Send a message via Yahoo to albert_emule
that not atija 100A, I want that it reaches the biggest current, which will be able with this toroide
  Reply With Quote
Old 4th July 2009, 06:55 PM   #4
diyAudio Member
 
Join Date: Feb 2009
Send a message via AIM to albert_emule Send a message via MSN to albert_emule Send a message via Yahoo to albert_emule
what is the number of turns of the primary enrrolamento and the number of turns of the secondary enrrolamento, for this nucleus?

how must I proceed in the calculations?

Thanks.
  Reply With Quote
Old 5th July 2009, 03:48 AM   #5
star882 is offline star882  United States
diyAudio Member
 
star882's Avatar
 
Join Date: Mar 2007
Open up the amp and find out what internal rail voltages it uses. Then build a power supply that outputs those voltages directly.
__________________
"Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!
  Reply With Quote
Old 11th July 2009, 04:10 PM   #6
diyAudio Member
 
Join Date: Jan 2007
hi Albert,how is your project?
As i m new in the block ,im thinking about beggin my project in half bridge using igbt +2110+3525 as initial form.Voltage controled regulated power supply.Im about using n27 toroid as main trafo and searching about output inductor,mainly because i will use high bank capacitance.
Have closed the regulation loop already?
  Reply With Quote
Old 11th July 2009, 07:11 PM   #7
Eva is offline Eva  Spain
diyAudio Member
 
Eva's Avatar
 
Join Date: Oct 2003
Location: Near the sea
Send a message via MSN to Eva
You should avoid toroid SMPS transformers for offline applications. Proper insulation is hard to achieve and usually ends up degrading transformer performance well below the level of E cores.

Or you may do like that forum member that we know who sells a product where primary mains-live magnet wires touch directly with secondary wires.

A little scratch on the enamel and someone may end up injured or dead.
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  Reply With Quote
Old 13th July 2009, 01:45 AM   #8
diyAudio Member
 
Join Date: Feb 2009
Send a message via AIM to albert_emule Send a message via MSN to albert_emule Send a message via Yahoo to albert_emule
my SMPS is with 20A in 112vac, and 50A in 14.74VCC

WHAT CAN BE CAUSING THIS LOW PROFIT?
  Reply With Quote
Old 13th July 2009, 07:21 AM   #9
Eva is offline Eva  Spain
diyAudio Member
 
Eva's Avatar
 
Join Date: Oct 2003
Location: Near the sea
Send a message via MSN to Eva
A calibrated power meter is required for efficiency measurements like that. Better than 1% precision is required.

Input current is a complex waveform, the current reading from a conventional multimeter is useless.
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  Reply With Quote
Old 13th July 2009, 09:43 AM   #10
diyAudio Member
 
Join Date: Feb 2009
Send a message via AIM to albert_emule Send a message via MSN to albert_emule Send a message via Yahoo to albert_emule
a voltmeter TRUE RMS, is it sufficient to meter the efficiency of the SMPS?
  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
bias adjust installation, bogen mo-100a mo 100a quicksilver apehead Tubes / Valves 2 27th December 2006 02:13 PM
220VAC to 12VDC conversion ioanno Class D 1 21st December 2004 12:24 PM
QUAD II mains at 240VAC instead of 220VAC? Zombie Tubes / Valves 4 20th February 2003 04:59 PM
I Have a big problam !!......with Inverter 12VDC to 220VAC Dj BASS AMP Solid State 27 23rd August 2002 09:14 AM


New To Site? Need Help?

All times are GMT. The time now is 08:53 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