John Curl's Blowtorch preamplifier part II

[johnferrier]

Which is the cheapest version which contains the term "preamplifier" I wonder?

"Nearly all public libraries in England, Scotland, and Wales— and all in Northern Ireland—subscribe to the Oxford English Dictionary online. This means you can access the dictionary, free, via your local library."

Does my library subscribe? : Oxford English Dictionary


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[brianco]

"Nearly all public libraries in England, Scotland, and Wales— and all in Northern Ireland—subscribe to the Oxford English Dictionary online. This means you can access the dictionary, free, via your local library."

Does my library subscribe? : Oxford English Dictionary


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The point being made by my question which brought the above response was to do with the now long forgotten and ignored topic which this thread is purported to cover!

 

[simon7000]

Back to my previous line, If I have a very slowly modulating signal superimposed with higher frequencies, what does an FFT show the user?

How does a sine wave show up differently that very narrow band noise?

John is on a forced vacation, so he is hanging out at Audio Asylum.

 

[SY]

John is on a forced vacation, so he is hanging out at Audio Asylum.

Nope, completely voluntary.

 

[simon7000]

Nope, completely voluntary.

I'll believe you but I think John is having problems getting on. Hijacked?

 

[SY]

His account looks just fine. Did he forget his password?

 

[pooge]

John is on a forced vacation, so he is hanging out at Audio Asylum.

Looking for love in all the right places.

 

[john curl]

I have been 'offline' since CES. No way to get back. Take it or leave it.

 

[hitsware]

OT tube amp revisited

can this be converted to solid state ?

 

[godfrey]

OT tube amp revisited

can this be converted to solid state ?

Sure, why not?

I wonder if something like ultra-linear operation would be possible with dual-gate power MOSFETs (or JFETs, for that matter).

 

[jan.didden]

OT tube amp revisited

can this be converted to solid state ?

Why would you? If you decide to go for SS anyway, you can build far more linear amplifiers.
Unless you just want to have fun

jan didden

 

[john curl]

Hi Ed, thanks for asking about me.

 

[tinitus]

OT posts removed

history of our ancestors is indeed interesting, but does not belong here


moderation

 

[scott wurcer]

Ed, you can have the last word. Let's get back to what an FFT's misses.

 

[john curl]

While Ed and Scott resolve their differences, perhaps I could attempt to continue in the spirit of this thread, which is 'old fashioned' analog design.

 

[Johnloudb]

One thing that bothers me is mysterious noise problems. Even with a really quiet shunt regulator, a circuit can be really noisy.

Yeah I'm having problems with a circuit.

 

[Joshua_G]

While Ed and Scott resolve their differences, perhaps I could attempt to continue in the spirit of this thread, which is 'old fashioned' analog design.

I'd love you to.

 

[Joshua_G]

One thing that bothers me is mysterious noise problems. Even with a really quiet shunt regulator, a circuit can be really noisy.

Yeah I'm having problems with a circuit.

What circuit?

 

[PMA]

One thing that bothers me is mysterious noise problems. Even with a really quiet shunt regulator, a circuit can be really noisy.

Yeah I'm having problems with a circuit.

In case that the circuit was inherently noisy, no quiet shunt regulator would help. You have to start with high quality, low noise design.

Regards,

 

[john curl]

Now, now, PMA, we have to find out what the circuit is, first. ;-)