Power supply for a rane RPM 26v - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 22nd February 2008, 03:32 AM   #1
KOA is offline KOA  United States
diyAudio Member
 
Join Date: Apr 2006
Location: seattle
Default Power supply for a rane RPM 26v

Here is a link to the actual supply.
http://www.rane.com/pdf/old/rs3dat.pdf
Links to regulators.
http://search.digikey.com/scripts/Dk...me=LM7912CT-ND
http://search.digikey.com/scripts/Dk...=497-3448-5-ND
http://search.digikey.com/scripts/Dk...=LT1083CP-5-ND
Preface: I am an electronics noob

It is a 12v 800ma, -12v 800ma, and a 5v 4000ma. I can buy one for about $150. but i think i could make a better supply thats regulated. I am not sure if theirs is or not. The data sheet for the power supply says the 5v should be within (i assume +-) 0.1v. Anyway... i found some voltage regulators on digikey that will do 1.5 amps for the -12 and 12. do you think that will be sufficient? I could not find a larger current device for the -12 on digikey.

Transformer selection: should I got a torroidal that has dual tapped 12's and a 5 additionally with individual rectifier bridges? Rectified those voltages should come up to a suitable dc voltage for the regulators(about 16v for the +-12 and 7.5v for the +5 ??). Or should I get a single output transformer because all my regulators can handle up to 30v on the input? Single rectifier bridge tapped at different points for the + and - 12(is this possible??). And the 5v regulator on the same line as the +12??? Would I only need to assure an appropriate VA rating so the 5v regulator would not affect the performance of the 12v regulator? Or would i need to compensate voltage wise???

I guess after that is figured out I could probably use some advise on filter cap sizes and type. I was looking at the Panasonic FM series for the main supply caps(electrolytic). They recommend tantalum caps on the output(and input if located some distance from the main supply caps) of the regulator. Any advice would be greatly appreciated. Thanks
  Reply With Quote
Old 22nd February 2008, 04:41 PM   #2
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
Well if you only need 800ma at 12v then the LM7812/7912 regulators will work fine but you might need to heatsink them.....There is also a way to get more current out of your regulators useing a pass transistor...Look at the datasheets as they should have examples how to do this.....

You should be able to build this PSU yourself for much cheaper than $150 ,It shouldn"t cost more than $20 in Parts.....
  Reply With Quote
Old 22nd February 2008, 07:25 PM   #3
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
Looking at that Rane PSU again it looks like a SMPS so you could build a sonicly better PSU with a 12v transformer and a handfull of caps, resistors,Bridge rectifier and some regulators....
  Reply With Quote
Old 23rd February 2008, 07:22 AM   #4
KOA is offline KOA  United States
diyAudio Member
 
Join Date: Apr 2006
Location: seattle
thanks i will pursue the regulated supply.
  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
WTB: Rane Pe-17 Cloth Ears Swap Meet 0 29th October 2008 02:15 AM
RANE RPM 26z digital crossover batdorf9 Swap Meet 3 18th April 2007 02:22 AM
Rane AC23b bjackson Swap Meet 2 7th October 2005 12:08 PM
Rane 4th order SVF nuppe Solid State 4 12th June 2004 08:54 PM
heater supply (xformer specs are 6.3V 2.5A) as supply for a power LED? jarthel Tubes / Valves 10 21st July 2003 01:30 PM


New To Site? Need Help?

All times are GMT. The time now is 05:00 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