can someone draw a PCB for a SMPS for me? - 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 5th March 2009, 03:56 PM   #1
diyAudio Member
 
Join Date: Dec 2008
Default can someone draw a PCB for a SMPS for me?

Hi
I found on the internet the following SMPS schematic
Click the image to open in full size.
Because i'm a beginner , i don't know so well to draw PCB's
Can someone draw the PCB for me?
in .brd , .pcb , or .pdf format or others formats

i want to use the SDT13007 tranzistors
http://www.alldatasheet.com/datashee...STD13007F.html

P.S :sorry for my english, i'm romanian
  Reply With Quote
Old 5th March 2009, 06:20 PM   #2
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: Californication
If you have not built a prototype yet, I'd suggest it.
You could build the first one by using perfboard. Work out the bugs because that doesn't look like a product yet.
__________________
like four million tons of hydrogen exploding on the sun
like the whisper of the termites building castles in the dust
  Reply With Quote
Old 5th March 2009, 06:47 PM   #3
star882 is offline star882  United States
diyAudio Member
 
star882's Avatar
 
Join Date: Mar 2007
Looks a lot like the circuits in modern fluorescent lamps. I would not recommend that circuit for operating electronics as it is not regulated. There are even better simple designs out there.
__________________
"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 5th March 2009, 06:57 PM   #4
diyAudio Member
 
Join Date: Dec 2008
in the article says that can be used on amplifiers

I'll make first a prototype and post there the results, and if will work fine, will mount on my amplifier because the transformers are too heavy

@star882 can post there a better schematic?
  Reply With Quote
Old 5th March 2009, 07:12 PM   #5
star882 is offline star882  United States
diyAudio Member
 
star882's Avatar
 
Join Date: Mar 2007
Quote:
Originally posted by lorik199
in the article says that can be used on amplifiers

I'll make first a prototype and post there the results, and if will work fine, will mount on my amplifier because the transformers are too heavy

@star882 can post there a better schematic?
Modify a PC power supply.
http://www.qrp4u.de/docs/en/powersupply/
__________________
"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 5th March 2009, 08:03 PM   #6
diyAudio Member
 
Join Date: Dec 2008
with that modification can ge only 13,8 v / 15 A
i need a simetrical power suply with + GND - at 25-30 Vcc
  Reply With Quote
Old 5th March 2009, 08:33 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
This circuit does not work well for variable loads like audio amplifiers because base current is not proportional to primary current and self oscillating frequency relies on transformer saturation.

The kind of circuit used in classic AT and ATX PC power supplies, with a current transformer for proportional drive and a TL494 for controlling switching frequency and duty cycle, works much much better.

Getting symmetrical output rails from one of these PC power supplies involves modifying the transformer, the rectifiers, the output inductor, output capacitors and feedback only. The output section of the PCB may be cut and replaced by a custom one for symmetrical rails.
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  Reply With Quote
Old 5th March 2009, 09:25 PM   #8
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: Californication
F1 s/b in the mains hot input.
C6 is for initial startup boot.

The Xfrmer core gap is key.
__________________
like four million tons of hydrogen exploding on the sun
like the whisper of the termites building castles in the dust
  Reply With Quote
Old 5th March 2009, 09:29 PM   #9
star882 is offline star882  United States
diyAudio Member
 
star882's Avatar
 
Join Date: Mar 2007
Quote:
Originally posted by lorik199
with that modification can ge only 13,8 v / 15 A
i need a simetrical power suply with + GND - at 25-30 Vcc
Rewind the secondary.
__________________
"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 8th March 2009, 04:01 PM   #10
diyAudio Member
 
Join Date: Dec 2008
if I take a good pc power suply and I modify the secondaires it will work?
need to eliminate the 3,3v , +/-5 V , +/-12 V and replace with two simetrical secondaires for 20-30 V
  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
Is there a program for you to draw a crossover? PoorSound Multi-Way 3 13th February 2008 05:40 AM
current draw of a chipamp jarthel Chip Amps 2 13th July 2007 11:45 AM
re-draw the I/V sch of Krell SBP-32X DAC X.G. Digital Source 21 13th March 2007 07:19 AM
Draw It Yourself McIntosh Amp ezkcdude Everything Else 5 21st July 2006 04:10 PM
How to draw a border with Eagle? Bas Horneman Everything Else 3 9th March 2004 01:49 AM


New To Site? Need Help?

All times are GMT. The time now is 07:51 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