How do I calculate output power?
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 27th July 2010, 02:29 AM #11 dcgillespie   diyAudio Member   Join Date: May 2010 Location: Ball Ground, GA Hi Flies -- You are exactly correct. The complete load line of a SE output stage extends both ways from the quiescent B+ operating point, in which case, it would then represent a peak to peak voltage value. I was just trying to keep my presentation simple, and therefore discussed only the half of the load line represented by a positive grid voltage swing, and then treated it as a peak value only. Of course as you surmised, whether you treat 1/2 of the load line as a peak value and divide by 1.414, or use the full load line's peak to peak value and divide by 2.828, it gets you to the same place, and same power output. Thanks for asking! Dave
 27th July 2010, 02:51 AM #12 flieslikeabeagl   diyAudio Member   Join Date: Apr 2004 Location: 3rd rock from the sun Thanks for confirming my guess, Dave! Sly things, those output transformers! -Flieslikeabeagle
 27th July 2010, 11:00 AM #13 mario13 diyAudio Member   Join Date: Jul 2010 Thank you all for your informative answers! Mario.
 27th July 2010, 02:56 PM #14 PB0305   diyAudio Member   Join Date: Jul 2010 Location: Prague (Imax - Imin) * (Umax - Umin) / 8
 3rd January 2018, 03:12 PM #15 Tyimo   diyAudio Member   Join Date: Nov 2002 Location: Hungary Hi! I'm looking for a formula for calculating the output power for OTL amplifiers. Can anybody help? Greets: Tyimo __________________ "Replacing any coupling capacitors with a well designed and correctly matched driver or interstage transformer yields an almost shocking improvement in sound..." Peter Qvortrup
 3rd January 2018, 03:23 PM #16 jazbo8 diyAudio Moderator     Join Date: Jan 2011 Location: In Transient V2/R
JoeAlders
diyAudio Member

Join Date: Feb 2011
Quote:
 Originally Posted by Tyimo Hi! I'm looking for a formula for calculating the output power for OTL amplifiers. Can anybody help? Greets: Tyimo
triode OTL or pentode OTL ?

Last edited by JoeAlders; 3rd January 2018 at 03:28 PM.

 3rd January 2018, 03:55 PM #18 Tyimo   diyAudio Member   Join Date: Nov 2002 Location: Hungary What about output the current? (I know I2xR....) __________________ "Replacing any coupling capacitors with a well designed and correctly matched driver or interstage transformer yields an almost shocking improvement in sound..." Peter Qvortrup
Tyimo
diyAudio Member

Join Date: Nov 2002
Location: Hungary
Quote:
 triode OTL or pentode OTL ?
Triode
__________________
"Replacing any coupling capacitors with a well designed and correctly matched driver or interstage transformer yields an almost shocking improvement in sound..." Peter Qvortrup

jazbo8
diyAudio Moderator

Join Date: Jan 2011
Location: In Transient
Quote:
 Originally Posted by Tyimo What about output the current? (I know I2xR....)
They get the same result, just Ohm's Law. It does not matter whether it's pentode or triode...

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