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Old 29th June 2012, 10:15 AM   #2601
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Edit above post: the 10uS in the first part should be 5uS of course.

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Old 29th June 2012, 12:38 PM   #2602
wahab is offline wahab  Algeria
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Quote:
Originally Posted by janneman View Post
It is not dependent on slew rate.
We can agree that due to phase shift , and considering a sine
at the input , the output signal maxima will not occur at the same
moment that the input signal maxima , this is why some people talk
of delay , since this "delay" is function of the amp s slew rate , that is ,
the faster the amp the less the apparent delay , i.e , the phase shift.
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Old 29th June 2012, 12:41 PM   #2603
mikelm is offline mikelm  England
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My guess is that Jan will be tearing his hair out to read this . . . .

That's if I understood his point correctly
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Old 29th June 2012, 02:44 PM   #2604
Jay is offline Jay  Indonesia
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Old 29th June 2012, 03:27 PM   #2605
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Quote:
Originally Posted by wahab View Post
We can agree that due to phase shift , and considering a sine
at the input , the output signal maxima will not occur at the same
moment that the input signal maxima , this is why some people talk
of delay , since this "delay" is function of the amp s slew rate , that is ,
the faster the amp the less the apparent delay , i.e , the phase shift.
A delayed sine wave will remain a sine wave, even if it is delayed by a few years. The apparent "speed "of an amp is purely a subjective observation, as it is not possible to hear any delay occurring from the input to output of an amp.
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Old 29th June 2012, 04:57 PM   #2606
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Quote:
Originally Posted by mikelm View Post
My guess is that Jan will be tearing his hair out to read this . . . .

That's if I understood his point correctly
Yes...
But I've learned that when people don't get it the first time, there's no point in repeating it.
With forums like this, with lots of lurkers, the best you can hope for is that SOME people like you do get it.

jan
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Old 29th June 2012, 05:00 PM   #2607
mikelm is offline mikelm  England
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Quote:
Originally Posted by Nico Ras View Post
A delayed sine wave will remain a sine wave, even if it is delayed by a few years. The apparent "speed "of an amp is purely a subjective observation, as it is not possible to hear any delay occurring from the input to output of an amp.
Unless you add feedback - then all kinds of mischief can be unleashed - some of it very audible.
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Old 29th June 2012, 05:20 PM   #2608
sonnya is offline sonnya  Denmark
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Quote:
Originally Posted by janneman View Post
Yes...
But I've learned that when people don't get it the first time, there's no point in repeating it.
With forums like this, with lots of lurkers, the best you can hope for is that SOME people like you do get it.

jan
How many Engineers do you Think would be released if it was only explained one time?!

In My case i have been studiyng it and succesfully inplementing it. But i have difficulties explain it in english and in writting. I use it every Day as i design RFID readers.

But every one Can be clever in theory. But if They Can not make s proper pcb design. Was is it then worth?

I have seen a lot of pcb design, and most of Them sucks regarding layout.
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Old 29th June 2012, 05:47 PM   #2609
mikelm is offline mikelm  England
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Yeah, I am happy to learn from qualified people some new details of understanding but despite what jan states below his posts, I tend to trust my ears even if it appears to disagree with some ones theory.

Otherwise we can have technically brilliant amps that may sound dreadful

I sympathise for all who have to make technical posts in foreign language - and I think people like me who only speak one language should be understanding on this.
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Old 29th June 2012, 05:49 PM   #2610
sonnya is offline sonnya  Denmark
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And Edmond, you are good no doubt about it. But i have seen no real work from your side besides sims??? Shows us some work you have actually put to work yourself.

And this is not your work, and it looks most likely as an autorouter has been used!???!!!

Then compare this with a mixed layout (The first picture) digital 16MHz and analog 17.1776MHz and 134.2KHz + 250KHz DC/DC converter.
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Last edited by sonnya; 29th June 2012 at 05:51 PM.
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