Ultra Simple Class D - Page 26 - 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 2nd September 2012, 01:45 AM   #251
stewin is offline stewin  Kenya
diyAudio Member
 
Join Date: Jul 2007
Quote:
Originally Posted by CPX View Post
Use resistive load for testing...don't you care about your speakers and your ears?.
Also any amplifier must survive continuous rms power into resistive load to be reliable with music.
resistive loads like ? resistors in parallel to match impedance desired?
  Reply With Quote
Old 3rd September 2012, 12:43 PM   #252
diyAudio Member
 
Join Date: Dec 2010
Location: INDIA
Cpx, Resistive load means a speaker...and non-resistive means a resistor load.. .
  Reply With Quote
Old 3rd September 2012, 02:41 PM   #253
CPX is offline CPX  Romania
diyAudio Member
 
Join Date: Nov 2004
Location: Cluj
sweetperfume:
No,the opposite is correct.
A speaker is a non resistive load, in fact it is a nonliniar inductive/capacitive/resistive system depending on its configuration(single or multiple in cabinet and with or without filters).

stewin:
Power resistors with their resistance smaller than rated impedance, example: for 4 ohm impedance use 3 or even better 2.5 ohm low inductance resistors or resistor network
  Reply With Quote
Old 8th September 2012, 07:53 AM   #254
mgee is offline mgee  South Africa
diyAudio Member
 
Join Date: Dec 2011
how can i simulate class d with ni circuit design suite multisim
  Reply With Quote
Old 8th September 2012, 08:16 PM   #255
Banned
 
Join Date: Jan 2005
You simply draw the schematgic, assuming multisim has models for the components used, which as far as i know it should.
  Reply With Quote
Old 9th September 2012, 06:39 AM   #256
mgee is offline mgee  South Africa
diyAudio Member
 
Join Date: Dec 2011
ni multisim doesnt hav models for ir2110 or irs2092. i hav seen several class d schematics with these two componets but i dont knw which cad was used. can anyone cum to my rescue please.
  Reply With Quote
Old 9th September 2012, 08:16 AM   #257
Banned
 
Join Date: Jan 2005
There are models available of the IR2110 for Linear Tech LTspice switchercad.
  Reply With Quote
Old 12th September 2012, 04:37 PM   #258
Macleod is offline Macleod  France
diyAudio Member
 
Join Date: Dec 2008
Location: Toulouse, south of France
The schematic post 246 showing bridged class D may experience problem. Both halves may oscillate at different frequencies and some intermodulation product may be heard.

Bridge class D amp should be done using the same modulator or synchronized modulator.
  Reply With Quote
Old 24th October 2012, 06:18 PM   #259
stewin is offline stewin  Kenya
diyAudio Member
 
Join Date: Jul 2007
hi all just found this schema by detex audio . it seems simple . what makes it 100watts and not 200 watts?


Attached Images
File Type: jpg 100wdamp.jpg (42.9 KB, 811 views)
File Type: jpg cdh.JPG (57.5 KB, 786 views)
File Type: jpg Class D Amplifier1.jpg (45.9 KB, 808 views)
File Type: jpg DAMP_BUTTOM_PCB.jpg (100.8 KB, 790 views)
File Type: jpg DAMP_TOP_PCB.jpg (53.2 KB, 723 views)
Attached Files
File Type: zip detex 100wts amp.zip (329.8 KB, 264 views)
File Type: pdf NegativePCB.pdf (20.4 KB, 163 views)
  Reply With Quote
Old 24th October 2012, 10:52 PM   #260
Hlaford is offline Hlaford  Croatia
diyAudio Member
 
Join Date: Mar 2009
Supply voltage? If I was not this lazy I'd make a LTspice simulation of this circuit to see what it is capable of, but on a first look, the supply voltage could be ramped up for some more power.
  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
FETish: ultra-simple transconductance amp Mr Evil Solid State 38 13th May 2009 12:07 PM
The "Freebird" ultra clean ultra simple preamp design Russ White Chip Amps 87 11th August 2008 10:28 AM
ultra simple distortion effect apunker Instruments and Amps 14 22nd February 2005 07:04 PM


New To Site? Need Help?

All times are GMT. The time now is 04:18 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