Grounded Bridge Question - 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 21st June 2006, 02:53 AM   #1
diyAudio Member
 
Join Date: Sep 2005
Default Grounded Bridge Question

I was curious about the grounded bridge concept from Crown Audio.

I'm sorry if this question has an obvious answer; I downloaded the white paper and it's still not obvious to me:

In the grounded bridge configuration, you have two pairs of output transistors, one pair is inverted from the other. For the output pair that is driving the load on the grounded side, what makes the current go through the speaker and not directly to ground? Does the answer have something to do with the floating reference of the output stage?
  Reply With Quote
Old 21st June 2006, 05:35 PM   #2
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Hello rtarbell,

I have studied this whitepaper earlier, and it's quite simple

As symbilised by the battery, the Grounded bridge uses a single supply (and not dual as in common amps). In this case the "ground" is virtual, and can float from 0V to the +supply Voltage. With no input the "ground" will rest at supply Voltage.

The only difference between this Grounded bridge and normal bridged amplifiers are, that you can save som money by using only one single supply.

I hope this have halped you, other whise just ask
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
  Reply With Quote
Old 22nd June 2006, 06:59 PM   #3
diyAudio Member
 
Join Date: Apr 2005
Location: In the Wild, Wild West
For the life of me I cannot find the white paper on Crown's site. Do you have a link for it? First I have heard of this and am interested in how it works or what they mean. A lot of the 'technical' papers on Crown's site are litlte more than technical marketing. Even their Class I is nothing really new and is typically know as PWM Class BD, not Class I. Anyway, a link would be great.

-SL
  Reply With Quote
Old 22nd June 2006, 07:05 PM   #4
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Here you go
http://www.crownaudio.com/amp_htm/ampinfo.htm
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
  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
Dynacord "3-stage grounded bridge" amp rtarbell Solid State 11 22nd January 2008 03:20 PM
Monorail grounded bridge N-Fet power amp ionutgaga Solid State 10 14th May 2007 11:07 AM
Grounded Grid Trafo question ultrachrome Tubes / Valves 3 21st November 2003 03:53 AM
grounded bridge Opie Solid State 1 7th February 2002 12:13 PM


New To Site? Need Help?

All times are GMT. The time now is 05:58 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