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

Solid State Talk all about solid state amplification.

Not enough voltage swing in P3A amp ??
Not enough voltage swing in P3A amp ??
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 30th June 2003, 07:46 AM   #1
Stormo is offline Stormo
diyAudio Member
Join Date: Sep 2002
Location: Denmark
Unhappy Not enough voltage swing in P3A amp ??

Hi all,

I have build several versions of P3A, and i am happy with the sound and all, but..

It is impossible for me to get more than 30 v pp swing from the amp before it clips, and i was hoping for some more. When it clips it is symmetrical.

My rails are at +-42 volt and the PSU is standard with 2*4700uF.

I have tried to feed to voltage stage with a current source and with botstrapped resistors - its all the same.

Does anyone have an idea ??

Thanks and kind regards,

  Reply With Quote
Old 30th June 2003, 08:02 AM   #2
Freddie is offline Freddie  Sweden
diyAudio Member
Join Date: Oct 2000
Location: Sweden

30v pp seems reasonable. Rememer that the rail voltages will fall when you load the amp, and you will also lose voltage across the 0R47 resistors.


  Reply With Quote


Not enough voltage swing in P3A amp ??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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Voltage swing of Heffa? StoneT Tubes / Valves 3 30th January 2007 10:46 PM
Q on voltage swing JoshK Tubes / Valves 4 13th December 2006 07:11 PM
aikido voltage swing Bill*B Tubes / Valves 8 10th August 2005 12:22 AM
how much above B+ will voltage swing in OPT? AudioGeek Tubes / Valves 2 15th April 2005 04:17 AM

New To Site? Need Help?

All times are GMT. The time now is 04:46 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio