Re: [ATM] Worm mounting

[Ken Lowther <hermit@outofoptions.org>]

Quoting Don Clement <clement.focuser@verizon.net>:

>
>> In other words, mechanicals won't compensate telescope and mount flexure
> and >atmospherics, electronics can.
>
>
>
> Perhaps.and perhaps not.
>
>  Finally, someone
> looked at the differences between tube amplifiers and transistor amplifiers.
> It turns out that bipolar transistors are very nonlinear devices and that
> the tubes used were much more linear devices. The transistor amplifiers were
> using massive amounts of negative feedback to get the fantastically low
> distortion specifications and the tube amplifiers used much less negative
> feedback because of the inherent tube linearity.

It has been a while, but as I remember (and they don't teach what tube 
do anymore) the signal is applied to the non linear part of the curve 
and MUST be.

I know I'll be corrected if wrong.. ;-)

Ken

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