High Current Class A Amplifier Supply - 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 10th June 2011, 01:56 PM   #1
Banned
 
Join Date: Nov 2006
Location: Torpoint
Default High Current Class A Amplifier Supply

I'm building a Nelson Pass Aleph 4 Class A Amplifer.

It uses a 40-0-40 VDC + 6A Power Supply per channel.

Using 500VA transformers and 50A Bridges, I have the components for two completely separate power supplies.

I have:
12 x 33000uF Computer Grade Caps.
4 x 22mH 15A Air Cored Inductors
4 x 0R47 25W Resistors.

It is intended to uses 3 x 33000uF capacitors per supply:
LEFT +ve
LEFT -ve
RIGHT +ve
RIGHT -ve

Question is, What is the best combination of C, R and L for this supply.

Previously the same capacitors worked beautifully as CCC (no R or L)

I'm guessing at CRCLC but I need someone with some SPICE experience to comment on how best to use the components avaialble.
  Reply With Quote
Old 10th June 2011, 05:50 PM   #2
Banned
 
Join Date: Nov 2006
Location: Torpoint
Within the limits of PSU2 that I could use, it would appear that CLCC is the best option.

Unfortunately the simulation just says that the diodes will blow, not surprising when I can only specify 1N5400s. I'm using 50A bridges.
  Reply With Quote
Old 10th June 2011, 06:57 PM   #3
Banned
 
Join Date: Nov 2006
Location: Torpoint
PSU2 is useless. It will not allow the specification of 35A diode bridge.
  Reply With Quote
Old 10th June 2011, 07:49 PM   #4
diyAudio Member
 
Join Date: Nov 2008
Location: Oakmont PA
Best is likely CLCRC 22mH is just an RF filter. Put a .1 uf after it. Lowest hum is LCRCC. Maximum current out of the transformers will not blow a 50A bridge. Internal resistance of the C is the unknown factor.
  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
Class D Vs Class I (Balanced Current Amplifier) rmsaudio Class D 29 26th January 2014 10:25 PM
High voltage, low current output stage for class D amplifier ionomolo Class D 45 15th February 2011 06:03 PM
Affordable high power class D for current chassis? Racket Scientist Class D 3 19th October 2010 12:55 PM
current sensing for high voltage supply sss Power Supplies 13 20th January 2007 07:10 PM


New To Site? Need Help?

All times are GMT. The time now is 07:19 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