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 6th June 2006, 09:58 AM   #1
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Default Can this be for real?!

I was just going through some old files and clutter on my harddrive,and ran across this schematic for a 31KW Mosfet amp...


Is this thing for real?
Attached Files
File Type: zip 31kwmosamplifier.zip (57.4 KB, 153 views)
  Reply With Quote
Old 6th June 2006, 10:15 AM   #2
kartino is offline kartino  Indonesia
diyAudio Member
 
kartino's Avatar
 
Join Date: Feb 2005
Location: Gunungkidul Indonesia
Well, I did not check detailed ho amps works but the 'crude' wattage of amps are depend on how high your rails and how high your speaker impedance. Just simple ohm law V=I.R and P=V.I.

Because you don't mention your output impedance we don't know thw wattage, how many pairs mosfet needed and how many amps to feed the gates, basically whole amps
  Reply With Quote
Old 6th June 2006, 12:43 PM   #3
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

simple answer is not really, there are far better ways of approaching
such power levels, e.g. multiple rail class G amplifers.

Though it seems it has +/- 180V rails and is bridged.

IMO there is totally not enough juice to drive
the gate capacitances of the output mosfets.

also see : http://sound.westhost.com/project117.htm

/sreten.
  Reply With Quote
Old 6th June 2006, 12:49 PM   #4
Banned
 
Join Date: Jan 2005
Hahahahahahaha That is what i call a real heater.

I wonder who would want that extreme powers

As far as i know there is only a driver that takes max 5kW, the MTX JackHammer.
  Reply With Quote
Old 6th June 2006, 01:06 PM   #5
Jennice is offline Jennice  Denmark
diyAudio Member
 
Join Date: Jun 2003
Location: Planet Earth
Did someone say hearing loss?

Just the size and weight of the power supply alone is a scary thought. The idle power consumption must be of "Nelson Pass"'ish proportions

Jennice
__________________
I get paid to break stuff. My g/f gets paid to play with children. Life is good.
  Reply With Quote
Old 6th June 2006, 03:13 PM   #6
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
It's grossly overdone. For a 180V supply, let's say the peak output voltage = 170V which is about 120V RMS. Double it for a bridge gives you 240V RMS in 8 ohms is about 7.2 kW. Puny.

Jan Didden
__________________
Never explain - your friends don't need it and your enemies won't believe you anyway - E. Hubbart
Check out Linear Audio Vol 7
!
  Reply With Quote
Old 6th June 2006, 03:16 PM   #7
diyAudio Member
 
Join Date: Dec 2005
Location: Kuala Lumpur
I thought that the really high power stuff was all active crossover with switching amps for the bass/mid and the hf no problem as piezo horns are so efficient.
  Reply With Quote
Old 6th June 2006, 04:32 PM   #8
diyAudio Member
 
Mr. Triatic's Avatar
 
Join Date: Feb 2002
Location: SWE EU
well.. i recently did maintenance on a 100kW switchingmode amplifier 8-) (Solidstate with MosFets)
__________________
www.joddla.net/audio/
  Reply With Quote
Old 6th June 2006, 04:51 PM   #9
Banned
 
Join Date: Jan 2005
100kW class d !?!?!? Your kidding
  Reply With Quote
Old 6th June 2006, 05:01 PM   #10
diyAudio Member
 
Mr. Triatic's Avatar
 
Join Date: Feb 2002
Location: SWE EU
nope.. imagine such an amp in your livingroom (it takes about that much place..) driving you 98dB hornspeakers... 8-)
__________________
www.joddla.net/audio/
  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
Getting into LP... for real! DragonMaster Analogue Source 56 26th September 2006 10:18 PM
A Real Sub mikee12345 Multi-Way 10 10th March 2003 02:03 PM
Combing effects: How real in "real" rooms? smeade1079 Multi-Way 3 10th March 2003 12:32 AM


New To Site? Need Help?

All times are GMT. The time now is 09:00 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