Class D Design Issues - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 28th November 2006, 10:41 PM   #1
Variac is offline Variac  United States
diyAudio Editor
 
Variac's Avatar
 
Join Date: Dec 2001
Location: San Francisco, USA
Default Class D Design Issues

This is a thread for the discussion of the design of class D amps, not discussion of kits or modifying existing amps.
  Reply With Quote
Old 13th December 2006, 05:26 AM   #2
diyAudio Member
 
Join Date: Jul 2004
Location: Seattle USA
Default First Class-d amp

I can't stand to see and empty thread

I think this is the first Class-d amp: US Patent 03011025 in 1961 by Herbert W. Sullivan
A tube amp, and the parts look to still be available today.

Go to: http://patft.uspto.gov/netahtml/PTO/search-bool.html
And search all fields for 03011025
Select the date: 1790 to present
  Reply With Quote
Old 3rd January 2007, 09:56 PM   #3
diyAudio Member
 
Join Date: Jan 2007
Do you think a full bridge,single supply 130v ,4irf260,2 ir2010,lm319 and 4060 giving 228khz a good begining?
  Reply With Quote
Old 20th January 2007, 06:21 PM   #4
Account Disabled
 
Join Date: Oct 2004
Default My Boring Website

Since this thread is about Class D design issues......

The Ramblings of a Mind Gone Wrong

A journey into the ins and outs of what Class D might be about from the perspective of someone who is trying to work it out.

DNA
  Reply With Quote
Old 19th April 2007, 03:51 PM   #5
Groman is offline Groman  Turkey
diyAudio Member
 
Join Date: Apr 2007
Do you know any ebook or web page of class D amplifier for beginners?
__________________
Groman
  Reply With Quote
Old 23rd April 2007, 09:44 PM   #6
bknauss is offline bknauss  United States
diyAudio Member
 
Join Date: Jul 2002
Location: Gaithersburg, MD
Send a message via AIM to bknauss
http://www.irf.com/product-info/audi...sdtutorial.pdf
  Reply With Quote
Old 3rd July 2007, 03:25 PM   #7
TJNII is offline TJNII  United States
diyAudio Member
 
Join Date: Jul 2007
It's tough. I've been working on one based off a PWM design for a year now and it's kicking my butt. I've got a prototype in the other room that plays, but doesn't sound too good and has a problem with ultra-low frequencies on the output. One of the few amp designs you'll come across that pass the signal through nand gates and optocouplers. On the upside, I think I have designed a successfull output stage for it. (Gotta take pride in the small victories.)
__________________
This space intentionally left blank
  Reply With Quote
Old 3rd July 2007, 03:49 PM   #8
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
There is already a thread discussing the design, classd4sure started it a year or two ago, full of useful info. Bit biased towards UcD though I believe.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 3rd July 2007, 05:38 PM   #9
diyAudio Member
 
Electrone's Avatar
 
Join Date: Jan 2007
Quote:
Originally posted by TJNII
has a problem with ultra-low frequencies on the output.
Check the power supply for the high side switch. It may be dropping too low if it is normally refreshed by bootstrapping.
  Reply With Quote
Old 4th July 2007, 12:02 AM   #10
BWRX is offline BWRX  United States
diyAudio Moderator Emeritus
 
Join Date: Jan 2005
Location: Pennsylvania
Quote:
Originally posted by TJNII
It's tough. I've been working on one based off a PWM design for a year now and it's kicking my butt.
Hi TJNII. Care to share more about your design with the rest of us?
__________________
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
Forum for issues related to the design of Class D amplifiers sovadk Class D 57 13th December 2006 07:45 AM


New To Site? Need Help?

All times are GMT. The time now is 10:41 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