[sdiy] Expo converters, lin log etc.

[Karl Ekdahl]

Hi list,

i'm a little confused as to the whole lin/log expo
stuff and i need some clarification.

Basically, the response of a "normal" vco (for
example) is logarithmic, therefore an exponential
converter is needed to linearize the final response -
right?

Would any exponential/anti-log converter work? What is
the base or the mathematical formula used to get this?
I'm not a math-head but perhaps there's a simple (and
probably inefficient) way to explain this even to me
:)

For me to fully understand this it'd be intersting to
create a fully "mathematical" circuit that performs
expo-conversion using purely mathematical building
blocks, i.e. something that does not rely on
transistor parameters i don't understand etc. Is this
possible?

Thanks

Karl


	
	
		
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