Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

SMPS that runs off AC mains
SMPS that runs off AC mains
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
Closed Thread
 
Thread Tools Search this Thread
Old 4th March 2005, 05:32 PM   #1
LBHajdu is offline LBHajdu  United States
diyAudio Member
 
Join Date: Feb 2002
Default SMPS that runs off AC mains

I知 currently building a leach amp. I have already order my transformers, however I would like to try building an SMPS for it. I知 currently building a leach amp. I have already ordered my transformers, however I would like to try building an SMPS for it. It should work off of both 110 or 220AC supply. I have no idea what I知 doing. What I have done is taken the schematic for the K6 amp PS (known to be a working PS) and stripped away the voltage and current regulation. I want it to be as simple as possible.

As you can see the sg3525n is just used as a 75khz oscillator, to drive T2. The turns ratio is stated, but the material and size are not. I have seen a pic of it on there web site. It looks like a small (about .8) ferrite toroid. This runs the H-bridge that drives the power transformer. The turns ratio is given (28pri and 14sec, 14sec). I can play with the sec. turns ratio to get the voltage (+-70) I need. The power transformer has the markings ETD490, I think that is just a bobbin size (can anyone confirm that ?). However if anything can be used I may go with a toroid 3播i. The input power is supplied as a fwbr (full wave bridge rectifier) for 220v mains and as a voltage doubler by just adding one jumper.

The original K6 is clamed to produce 1KW and 2KW peak. 600W would be sufficient the rest is just a bonus.

Any comments / help is welcome, as I said I don稚 know what I知 doing.
Attached Files
File Type: pdf my smps idea.pdf (87.8 KB, 162 views)
 
Old 4th March 2005, 05:40 PM   #2
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
I don't think mains SMPS discussion is allowed under forum rules, because of the extreme danger.
 
Old 4th March 2005, 06:00 PM   #3
SY is offline SY  United States
On Hiatus
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
SMPS that runs off AC mains


That's correct. Especially for someone who says "I have no idea what I'm doing." Death is very, very permanent.
__________________
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
 

Closed Thread


SMPS that runs off AC mainsHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MAINS... simple, old style amplifier, plugged into mains electrical outlet (110) destroyer X Solid State 2 15th June 2008 03:31 PM
Dynaco ST-120 runs hot bobgroger Solid State 6 15th April 2008 06:20 AM
Slaving a mains SMPS...why not gmphadte Power Supplies 3 5th November 2007 09:06 PM
OPA4228 runs hot iron25 Solid State 2 1st July 2007 06:42 PM
Toroid or EE Ferrite core, which is Best for 240V mains SMPS Workhorse Power Supplies 49 6th February 2007 07:44 PM


New To Site? Need Help?

All times are GMT. The time now is 09:27 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki