In both cases, you might be looking at the same current and power dissipated in the tubes themselves, but the voltage on the push/pull will be, by nature of being push pull, roughly twice that
matt, I hope your headache has cleared up?
Apologies but I'm stuck on this voltage swing idea you mention.
My understanding is that for either SE or PP, the voltage swing is 2 x VB+, minus the voltage drop across the tube (and cathode resistor, if applicable).
Bear in mind that doubling the voltage swing gives four times the power. http://www.valvewizard.co.uk/se.html http://www.valvewizard.co.uk/pp.html
https://www.justgiving.com/page/5-in-5-for-charlie This is my step son and his family. He is running 5 marathons in 5 days to support the research into STXBP1, the genetic condition my grandson Charlie has. Please consider supporting him!
Not being rude at all Matt, I'm simply seeking an accurate answer to what appears to be a difficult question - I've had several "experts" give me completely different answers - Not sure what you found so offensive?
So there's no misunderstanding, my intent here was to simply to get the best minds to hash this out to something we can all hang out hat's on - It appears that even you two (whom obviously have a good understanding of this stuff) don't completely agree. I totally appreciate both you guys and meant no disrespect with the re-post.
Okay Matt, if you're saying that you and PDF64 are saying essentially the same thing then my hat goes off to PDF for happily sharing that information in easy to understand terms, at no charge even. I've poked around this forum enough to see loads of technical information being shared free of charge, simply because those of us that frequent this sight share A like passion for tube electronics and related subject matter.
Perhaps you would be better served by a site who's members will cut you a check for your services? I've seen just that in the automotive industry, no reason you couldn't do the same -
I just had a thought - for a class A PP output stage, why shouldn't the power output capability increase if the bias voltage is increased to put it into class B?
Due to the OT primary load impedance reducing when one side is in cut off, thereby increasing plate current.
Assume that sufficient signal voltage, B+ current and OT flux are available.
matt, bad news about the ear ache, I hope it improves soon.
Apologies that my post irritated you, I was not intending to be rude. I included the links to show the basis of my understanding of the topic, eg there may be something there that reveals a misunderstanding on my part.
https://www.justgiving.com/page/5-in-5-for-charlie This is my step son and his family. He is running 5 marathons in 5 days to support the research into STXBP1, the genetic condition my grandson Charlie has. Please consider supporting him!
I hope that ampgarage.com doesn't turn into one of those forums where beginners ask questions and a small handful of 'experts' answer the questions. It would really spoil the place.
As a marginally on-topic comment, I have been a professional teacher at different points in my life. I always let my students know that I would work as hard as they wanted me to, as hard as they needed me to, but never harder than them. Beginners should not expect the experts to put more effort into answering a question than they have already invested in trying to figure it out themselves.
Tony Bones wrote:I hope that ampgarage.com doesn't turn into one of those forums where beginners ask questions and a small handful of 'experts' answer the questions. It would really spoil the place.
Unfortunately, TAG has been trending toward this for several years.
Tony Bones wrote:As a marginally on-topic comment, I have been a professional teacher at different points in my life. I always let my students know that I would work as hard as they wanted me to, as hard as they needed me to, but never harder than them. Beginners should not expect the experts to put more effort into answering a question than they have already invested in trying to figure it out themselves.
Good point. The 'students' should be performing their due diligence, but less and less of that is happening. I felt this was the situation at the beginning of this thread, which is why I suggested some reading. The original question was very open ended without a simple solution. Helping a guy fix an amp is one thing, providing a technical education is very different IMO. The forum has been through similar situations in the past. It never seems to turn out well.
Electronic equipment is designed using facts and mathematics, not opinion and dogma.
