N-channel Amp - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 November 2001, 12:08 PM   #1
diyAudio Member
 
Join Date: May 2001
Location: Bangalore, India
There have been questions time and again in these pages regarding Anthony Holton's N-channel amplifier. I have just completed the second PCB of this amplifier and have found the sound to be really good.

Since there have been repeated requests for the PCB design, in a couple of days I will post the PCB design and a picture of a populated board. Only I need to know if I can send these as attachments to the Web Administrator (Jason).

I have a question in this regard. I plan to use about 70,000uf of capacitance per rail for a stereo pair. My transformers (1.1 KVa) produce about 85volts per rail off-load. I would like to insert inductors to form a pi-filter. What are suggestions to make inductors using EI core, either CRGO or CRNGO laminations. These would be cheap to make where I live.

What should the core rating be (to handle >10 Amps), the guage of wire and the number of turns? Any suggestions, including using torroidal cores would be much appreciated.

Thanks,
__________________
Sam
  Reply With Quote
Old 6th November 2001, 12:01 AM   #2
diyAudio Member
 
Join Date: Oct 2001
Location: UW Stevens Point Campus
Sam,
Would it be possible for you to e-mail me the n-channel pcb?


boppe069@uwsp.edu


Thanks,

Brian
  Reply With Quote
Old 6th November 2001, 04:09 AM   #3
Chad is offline Chad  United States
diyAudio Member
 
Join Date: Aug 2001
Location: Florida, USA
I would love to see your pcb layout. I just finished a N-channel, the sound is great.(I know I'm biased because I built it.) I used Anthony's pcb it is a very nice board only a few changes are needed to make the update possible.
  Reply With Quote
Old 6th November 2001, 07:53 AM   #4
diyAudio Member
 
Join Date: May 2001
Location: Bangalore, India
Any suggestions on the >10 Amp inductor coils I enquired about in the original post on this thread?

And Jason, is it possible for me to email the PCB design, as an attachment, to your ID?

Thanks,
__________________
Sam
  Reply With Quote
Old 6th November 2001, 08:56 AM   #5
hifi is offline hifi  Sweden
diyAudio Member
 
Join Date: Mar 2001
Location: sweden
plz mail the layout to me aswell

hifi@hotbrev.com

i hope the designer holton dosnt mind?

7mmicke
  Reply With Quote
Old 12th November 2001, 09:08 AM   #6
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
Location: USA
With a +/- 85V rail the chokes need to be rated at 20A for a dual mono supply or (40A) for a mono supply feeding a stereo amp.These are peak amperage values.Tell the coil designers that you need a 'swinging choke' rated at 5A(10A) continuous and 20A(40A) peak.Pick the largest core size you can stand.Find out how much wattage this will dissipate and at what temperature rise.Pick a sensible temperature rise, say 30*C.Take the wattage figure and divide by the square of the continuous current.This will give you the maximum DCR of the wire.Select wire length based on DCR requirements.Balance gauge size/length vs maximum inductor volume.Whatever the inductance is, is whatever the inductance is (not critical).
  Reply With Quote
Old 12th November 2001, 12:16 PM   #7
diyAudio Member
 
Join Date: Oct 2001
Location: UW Stevens Point Campus
Question gain adjustment

Could a pot be added to the superamp for gain adjustment?

Brian
  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
Creating 5.1 Multi Channel sound from 2 channel jenkrich Everything Else 5 1st September 2009 07:29 AM
4 channel conversion to mono 1 channel iUSERTLO72p Car Audio 24 25th October 2007 05:07 PM
HELP!: Channel volume very very low, other channel fine. harrisni Solid State 2 20th September 2006 11:10 AM
My 4 channel car Amp distorting on 1 channel (large pics) MikeHunt79 Car Audio 9 3rd September 2003 06:41 AM
Help quick! 4 Channel > 2 Channel? zmoz Car Audio 3 5th July 2003 08:48 PM


New To Site? Need Help?

All times are GMT. The time now is 04:27 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