ucd 25 watts to 1200 watts using 2 mosfets - Page 81 - 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 January 2011, 10:55 AM   #801
diyAudio Member
 
Join Date: Apr 2010
Location: Nis, Serbia
Happy new year to all!
  Reply With Quote
Old 2nd January 2011, 03:12 PM   #802
stewin is offline stewin  Kenya
diyAudio Member
 
Join Date: Jul 2007
happy new year guyz and a prosperous 2008
  Reply With Quote
Old 2nd January 2011, 03:27 PM   #803
diyAudio Member
 
Join Date: Sep 2009
Location: Romania,Calarasi
Send a message via Yahoo to ionutzxpo
Happy new year!!
  Reply With Quote
Old 4th January 2011, 07:18 AM   #804
stewin is offline stewin  Kenya
diyAudio Member
 
Join Date: Jul 2007
Quote:
Originally Posted by stewin View Post
happy new year guyz and a prosperous 2008
happy new year guyz and a prosperous 2011
  Reply With Quote
Old 8th January 2011, 03:58 PM   #805
diyAudio Member
 
Join Date: Apr 2010
Location: Nis, Serbia
Hi to all..

Do anyone have schematic of some simple smps +-50-60V 400-600W, i need for this amplifier

tnx
  Reply With Quote
Old 8th January 2011, 08:42 PM   #806
NMOS is offline NMOS  Germany
diyAudio Member
 
NMOS's Avatar
 
Join Date: Dec 2010
Location: Frankfurt
Quote:
Originally Posted by Dzony988 View Post
Hi to all..

Do anyone have schematic of some simple smps +-50-60V 400-600W, i need for this amplifier

tnx

better use transformer, because you will dont have power supply pumping problems and dont need overvoltage protection
  Reply With Quote
Old 8th January 2011, 08:42 PM   #807
NMOS is offline NMOS  Germany
diyAudio Member
 
NMOS's Avatar
 
Join Date: Dec 2010
Location: Frankfurt
Does someboday have short circuit protection for this amp ?
  Reply With Quote
Old 8th January 2011, 08:57 PM   #808
diyAudio Member
 
lorylaci's Avatar
 
Join Date: Aug 2008
Location: Dabas, Hungary
Send a message via MSN to lorylaci
Quote:
Originally Posted by NMOS View Post
better use transformer, because you will dont have power supply pumping problems and dont need overvoltage protection
If you use enough caps, then you wont have pumping problems.
You can calculate sufficient capacitor values with: deltaU=Ubus/(8*Pi*f*Rload*Cbus)

The music power content under 70Hz is rapidly decreasing. Few kick drums are tuned/miked/eqd to sound under 70Hz, and bass guitar pickups dont get the first harmonic... so unless you design a sub amp for home cinema, and use sufficient caps (caps still cheap) supply bus pumping is not an issue.
Simple short circuit prot can be achieved by putting a shunt in and using a opto-coupler to supply Vn+12V to SD pin of IR2110, but the shunt dissipation will be higher than the main FETs dissipation, so this usual shunt method for Class B should not be used, unless you dont care about this small dissipation.
__________________
Olyan nem volt még, hogy ne lett volna valahogy
  Reply With Quote
Old 9th January 2011, 12:10 AM   #809
diyAudio Member
 
Join Date: Apr 2010
Location: Nis, Serbia
No, I dont really care for this small disipation... do you have this schematic with sd pin, which has been verified, on example for +-60V for 350-400W on 4 ohm load

Thank you
  Reply With Quote
Old 9th January 2011, 02:10 AM   #810
NMOS is offline NMOS  Germany
diyAudio Member
 
NMOS's Avatar
 
Join Date: Dec 2010
Location: Frankfurt
Quote:
Originally Posted by lorylaci View Post
If you use enough caps, then you wont have pumping problems.
You can calculate sufficient capacitor values with: deltaU=Ubus/(8*Pi*f*Rload*Cbus)

The music power content under 70Hz is rapidly decreasing. Few kick drums are tuned/miked/eqd to sound under 70Hz, and bass guitar pickups dont get the first harmonic... so unless you design a sub amp for home cinema, and use sufficient caps (caps still cheap) supply bus pumping is not an issue.
Simple short circuit prot can be achieved by putting a shunt in and using a opto-coupler to supply Vn+12V to SD pin of IR2110, but the shunt dissipation will be higher than the main FETs dissipation, so this usual shunt method for Class B should not be used, unless you dont care about this small dissipation.

so please can you offer schematic for SD-Pin with IR 2110
  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
Philips 40/25/15 watts amplifier with Universal preamplifier circuit. renjiish Solid State 64 28th July 2014 11:33 AM
Decibel Watts VS Watts ? fivestring Solid State 11 1st April 2009 01:08 PM
AMP1-B: why only 25 watts @8ohms? theAnonymous1 Class D 10 15th August 2005 06:55 PM
Sound quality of amps at 0.3 watts vs @ typical 5 watts rick57 Solid State 2 26th March 2005 06:25 AM
Need 2 watts Vivek Everything Else 4 17th July 2003 08:29 AM


New To Site? Need Help?

All times are GMT. The time now is 11:09 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