where to measure the Ipeak of class A amplifier? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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
Thread Tools Search this Thread
Old 18th February 2013, 08:57 PM   #1
diyAudio Member
Join Date: Aug 2012
Default where to measure the Ipeak of class A amplifier?

where to measure the Ipeak of the class A amplifier?
for one pair of output is it at the source resistor so example if the voltage measured at source resistor is 220mv with source resistance of 0.22 ohm then the output current is 1Aamp so is this the peak current? or 2Amps is the peak?
  Reply With Quote
Old 18th February 2013, 09:03 PM   #2
diyAudio Member
jan.didden's Avatar
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
The peak current is twice the quiescent current.

Suppose the quiescent current is 1A as in your example.
That current can go up, at the limit of class A, to 2A, because at that point the 'other' output side goes to zero current.

Alternatively, if the 'other' output side goes to the 2A, then 'this' output side goes to zero.

Therefor, each output side can go from zero to 2A, so that's the peak output voltage.

Didn't hurt, did it?

If you don't change your beliefs, your life will be like this forever. Is that good news? - W. S. Maugham
Check out Linear Audio!
  Reply With Quote
Old 18th February 2013, 09:21 PM   #3
diyAudio Member
Join Date: Aug 2012
so how do we calculate that how much amount of heat each output device is dissipating?
in the above case...
we it didnt hurt only heat hurts...we are getting ready for the summer...
  Reply With Quote


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
How to measure JLH Class A with a Scope chris ma Everything Else 84 28th December 2012 09:13 PM
How to measure phase margin of an amplifier? ojg Solid State 96 22nd October 2010 10:38 PM
How you can measure an amplifier? samsagaz Solid State 2 30th April 2008 07:44 AM
Measure the output of a bridged class D ocool_15 Class D 5 20th April 2008 08:12 PM

New To Site? Need Help?

All times are GMT. The time now is 11:59 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2