Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

How to calculate Pout for Push Pull design
How to calculate Pout for Push Pull design
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 2nd May 2012, 07:19 PM   #1
EddieRich is offline EddieRich  United States
diyAudio Member
EddieRich's Avatar
Join Date: Jun 2011
Location: North of Boston
Default How to calculate Pout for Push Pull design

I have built 2 amplifiers so far, both with single-ended output transformers. For my next design I want to try push-pull. I have my loadline, but I am at a loss how to calculate the expected power output. The formula I have been using is Vpk * Ipk * 0.5. Do I calculate power from A to B then B to C and add them?

Also, I know how to calculate plate dissipation with zero signal. How do you calculate plate dissipation with max signal for both single-ended and push-pull?
Attached Images
File Type: gif amp3.gif (100.9 KB, 117 views)
  Reply With Quote
Old 2nd May 2012, 08:12 PM   #2
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
diyAudio Member
Osvaldo de Banfield's Avatar
Join Date: Dec 2011
Location: Barrio Garay,Almirante Brown, Buenos Aires, Argentina
Assuming you are using class A push pull, the power output is twice the power single tube. This is because the voltage swing is twice working in a also twice output impedance. Normally, you can increase small percentage, because the PP cancel out 2nd and all even harmonics generated inside the stage, and, for a given THD, the power can be increased.

Keep in mind, that, the primary of the transformer IS DIFFERENT for a push pull class A amplifier, it must have 1/4 of the turns calculated for a single tube stage, because of the autotransformer reaction from one tube to the other.
Osvaldo F. Zappacosta. Electronic Engineer UTN FRA from 2001.
Argentine Ham Radio LW1DSE since 1987.
  Reply With Quote


How to calculate Pout for Push Pull designHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help me design push-pull speaker system ted4412wilt Multi-Way 2 22nd March 2012 05:26 PM
Differential push-pull design question Tyimo Tubes / Valves 4 15th January 2010 08:05 PM
push-pull design nukaidee Multi-Way 31 9th May 2009 10:18 AM
modify parallel push-pull EL84 to single push-pull chungtat Tubes / Valves 12 4th November 2005 12:25 AM
833 push pull design help sickss Tubes / Valves 19 7th March 2005 04:25 PM

New To Site? Need Help?

All times are GMT. The time now is 05:18 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio