Influence of the delay amplifiers for listening characteristics

[Federmann]

Measured 100kHz

Characteristics says a lot. You have to learn to read the charts.

 

[wahab]

Characteristics says a lot. You have to learn to read the charts.

Are you sure ?...
Why the two sines, which are of the same frequencies,
does not have the same zero crossing point ?...

 

[PMA]

That's the delay. The main topic of this Federmann's thread.

 

[wahab]

A delay that is variable with amplitude, not frequency ?..
Great achievement...

 

[Federmann]

Delay is not dependent on the amplitude or frequency. Shape transfer characteristic of linearity says.

 

[wahab]

Delay is not dependent on the amplitude or frequency. Shape transfer characteristic of linearity says.

How could phase shift be independant of frequency?..
Has your amp a zero order transfer function ?...

 

[Federmann]

Delay is the time in 'ns' and is independent of frequency. The phase shift is angle. The phase shift is the share of delays and periods. The phase shift is dependent on frequency.

 

[Federmann]

I do not use local feedback. I use only the overall feedback. Here you can see the extent of feedback regulation capacity.

 

[Upupa Epops]

Nice, Federmann..like halo upon your head...but we saw it manytimes before...and now show us full power at 10 kHz into four Ohm with some parallel capacity, e.g. 0.1 micro...

 

[Federmann]

20kHz, 150V p-p (4Ω + Boucherot 2R2+100nF)

 

[Upupa Epops]

No, Federman, Boucherot is serial configuration and I am telling about parallel one...

 

[Mooly]

That looks respectable Federmann.

Could you also repeat with capacitive loading also.
I think that's what Upupa Epops means too... either with or without the 2.2 ohm + 0.1uf network.

 

[PMA]

I would help you, guys.

Dear Federmann, they are asking you to make a test like this and show the result:

 

[Mooly]

Thank you Pavel... yes just like that.

 

[Federmann]

I would help you, guys.

Dear Federmann, they are asking you to make a test like this and show the result:

I understand very well. I already wrote that I can show up to build another amp. The amplifier has been measured, plays in a band.

 

[Federmann]

I can not show the result, which was not measured. Next time, I focus voltages and currents, will certainly be interesting.

 

[PMA]

Thanks for the explanation, we shall wait for your results.

 

[PMA]

I just tried, but I have fuses no longer

 

[Federmann]

HEXFET Power MOSFET in a good topology has excellent properties. It is resistant to high frequencies. Is not dependent on output voltage. Therefore, I am bipolar transistors after 30 years left.

 

[Federmann]

Good results are achieved only if the resource is part of the amplifier. The filter capacitors must be on transistors. No local feedback, but overall feedback.