The point I wanted to make is that push-pull is not the same as balanced operation, as you seem to say, unless I misread you?
You can have a push-pull SE and a push-pull balanced amp.
A regular push-pull amp like a tube output with 2 triodes in push-pull is still SE because the load is connected to the signal at one end and ground at the other end, so the load is driven single-ended. If I take two of these stages driven in opposite phase than I can connect the load between them and that's balanced operation.
jan didden
Can you define SE (single ended) for me?
Can you define PP (push pull) for me?
These recent post have me very confused !
Can you define PP (push pull) for me?
These recent post have me very confused !
Well, for me, push-pull is two devices that alternatively pull and push on the load. Balanced is when you have two 'arms' of amplifiers that 'seesaw' on each end of the load. Each of those two 'arms' can be either a push-pull stage or a SE stage.
It applies to the output of a power amp but you can also drive a power amp from a preamp balanced or single-ended. Same difference 😉
jan
Can anybody define SE and PP?
It seems much of my confusion and the reason for much of the preceding disagreement is due to Members having a different personal definition for these operating modes.
Let's start from a common base and make progress from there.
It seems much of my confusion and the reason for much of the preceding disagreement is due to Members having a different personal definition for these operating modes.
Let's start from a common base and make progress from there.
Yeah, if we don't even know what 'referred to ground' means anymore, we're not going anywhere.
"Single-ended signaling is the simplest and most commonly used method of transmitting electrical signals over wires. One wire carries a varying voltage that represents the signal, while the other wire is connected to a reference voltage, usually ground".
I leave it in your able hands Andrew 😉
jan didden
Clear-cut definition was provided.
To be absolutely sure, use just one device in each stage and you can´t go wrong. This gives you the lowest distortion that is theoretically possible, and a subjectively superior performance. Avoid paralleled devices too.
To be absolutely sure, use just one device in each stage and you can´t go wrong. This gives you the lowest distortion that is theoretically possible, and a subjectively superior performance. Avoid paralleled devices too.
does anyone want to comment on these two personal definitions for PP & SE that Wuyit is using?
I don't know why you guys keep fueling the fire?
This thread gets more and more hilareous per post.
Oh yeah,maybe thats why. jer
This thread gets more and more hilareous per post.
Oh yeah,maybe thats why. jer
Well, these wouldn't be the first of his posts that are confusing and wrong. It's the ongoing trolling that distracts, confuses and derails the discussion
so people get frustrated and just drop the whole thread. 😡
Do yourselves a big favour and read an authoritative text instead of trying to make sense of the "me too" nonsense. D. Self, for one author, makes fairly short work of most of what has been discussed in just 4 of many pages on ss class A; pp 299-303 in the latest edition of his Audio Power Amplifier Design Handbook. Doubtless, other recognized authors do a good job too.
There is a world of difference between ill-conceived opinion and demonstrable science. We can't use opinions anyway, in this line of discussion or learning 🙁
so people get frustrated and just drop the whole thread. 😡
Do yourselves a big favour and read an authoritative text instead of trying to make sense of the "me too" nonsense. D. Self, for one author, makes fairly short work of most of what has been discussed in just 4 of many pages on ss class A; pp 299-303 in the latest edition of his Audio Power Amplifier Design Handbook. Doubtless, other recognized authors do a good job too.
There is a world of difference between ill-conceived opinion and demonstrable science. We can't use opinions anyway, in this line of discussion or learning 🙁
Hi,
the signal transmission can either be single-ended or balanced exhibiting distinctive differences in transfer function. The single-ended topology is widely associated with high distortion, however, that`s an unfortunate misconception (just one of many).
Of course, the main purpose of a balanced output stage is to increase efficiency, which cannot be done without giving up linearity. Even order harmonics not being amplified implies substantial nonlinearity¤. Other distortions are also significant, like crossover distortion. (Although Class A biased devices in balanced circuits conduct the whole signal waveform and switching distortion is avoided, crossover distortion still occurs).
¤The issue is kinda complex, anyway, symmetric input waveforms will always have a symmetric output representation, while the output representation of asymmetric input signals depends on transfer function geometry that can be symmetric, asymmetric or neither symmetric nor asymmetric with reference to ground. Examples of amplifiers producing copious amounts of odd harmonics are op-amps and the blameless-style amplifiers.
the signal transmission can either be single-ended or balanced exhibiting distinctive differences in transfer function. The single-ended topology is widely associated with high distortion, however, that`s an unfortunate misconception (just one of many).
Of course, the main purpose of a balanced output stage is to increase efficiency, which cannot be done without giving up linearity. Even order harmonics not being amplified implies substantial nonlinearity¤. Other distortions are also significant, like crossover distortion. (Although Class A biased devices in balanced circuits conduct the whole signal waveform and switching distortion is avoided, crossover distortion still occurs).
¤The issue is kinda complex, anyway, symmetric input waveforms will always have a symmetric output representation, while the output representation of asymmetric input signals depends on transfer function geometry that can be symmetric, asymmetric or neither symmetric nor asymmetric with reference to ground. Examples of amplifiers producing copious amounts of odd harmonics are op-amps and the blameless-style amplifiers.
I've removed some rules-breaking posts. Please refrain from personal attacks. If you believe that a post or poster has violated forum rules, the correct thing to do is use the "report post" button.Would anybody (everybody) please comment?
I cannot understand what Wuyit is defining.
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