Logarithmic transfomer???

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Learner

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Jun 4, 2004
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Does anyone know if there is such thing as a logarithmic transformer?

Wouldn't it be useful if there is one that cuts off its response at 80mV so it can minimise noise at the output of the circuit for coupling?

May be change the core mixture material or use thicker lam between windings?

Thoughts?
 
[quote author="Learner"]Does anyone know if there is such thing as a logarithmic transformer?
[/quote]
Yes, it can be useful for making logarithmic drawer (X,t plotter).
In the year 1920...
Contact Von Braunmuehl,

+ + +

R.I.P

xvlk
 
[quote author="xvlk"]Does anyone know if there is such thing as a logarithmic transformer?
[/quote]
By the way; in the years 1950s in the soviet union was
developed "radio on wires". It was 100 V audio line,
(for all part of city, or campus) and in every
room there was something like radio.
It had one knob, 100 V input plug. and speaker inside.
That knob was connected to logaritmic-tapped 100V to 4 Ohm
transformer.
Some that thing I have somewhere in my "scrapheap".

xvlk
 
By the way; in the years 1950s in the soviet union was
developed "radio on wires".
I guess that systems was quite commonplace. Lots of hospitals and other types of such 'small communities' used that here in NL and then of course everywhere else as well. I didn't know of the log-nature of the TX (but indeed it'd better be).

BTW, must confess I didn't realize the seriousness of the question at first.
Was thinking some kind of log-response (transfer) was meant...
...next thing they're going to ask would then be asking for a Laplace Transformer... (very oooold joke)
 
Why isn't this type of transformer being used or sold today???

Can any DIY transformer nerds shed some light in winding your own, possible for DIY at all????
 
A log transformer wouldn't that be more or less like the N/S coils used for linearity in television sets - you know, the types with a pre-magnetized core..?

Jakob E.
 
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