[sdiy] Translinear circuits

[cheater00 .]

Neil,
apparently the archives don't work at the moment. Would you be kind
enough to paste in the original post or at least the name of the book?

Thanks,
D.

On Wed, Aug 7, 2013 at 4:32 PM, Neil Johnson <neil.johnson71 at gmail.com> wrote:
> On 7 August 2013 03:00, Pete Hartman <pete.hartman at gmail.com> wrote:
>> I stumbled across some information about translinear circuits
>> today....  Not a concept I'm familiar with, but I was intrigued at the
>> idea of things like being able to do transforms like the pythagorean
>> theorem.
>>
>> Looking a little deeper into what I can find online, it looks like
>> current mirrors are examples of translinear circuits, but I can't find
>> any examples other than that of them showing up in the
>> musical/synthesizer context.
>>
>> I'm curious whether this is because it's well known and not
>> interesting, well known and already explored and descried in different
>> ways, or... ?  I figure there's enough collective experience in
>> engineering here that someone has a better idea of these things than I
>> do.  Anyone have any thoughts to how they could be or have been
>> applied?
>
> The approach is expertly described in a book discussed a while back on-list:
>
> http://search.retrosynth.com/synth-diy/search/lookit.cgi?-v1101.8401
>
> Following Phil's suggestion I found a copy on Amazon for not much.  It
> is a fascinating book if you're interested in analogue IC design.
> Gilbert's chapter 2 is a pleasure to read.
>
> Neil
> --
> http://www.njohnson.co.uk
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