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Subject: Re: Online tech help
Date: Tue, 21 Jan 2003 22:02:16 +0000 (UTC)
References: <firstname.lastname@example.org> <3E2D5530.34323F58@webaccess.net>
NNTP-Posting-Date: Tue, 21 Jan 2003 22:02:16 +0000 (UTC)
User-Agent: tin/1.5.14-20020926 ("Soil") (UNIX) (Linux/2.4.20 (i686))
Chuck Simmons wrote:
> email@example.com wrote:
>> B2431 wrote:
>> > Every time I go look on the web for information on how something works or how
>> > to use it I wind up going in circles. Is there a single place I can go for help
>> > with synchro, r/d, op amp, a/d etc? I'm not looking for an EE course, just a
>> > reference.
>> > Failing that is there a book I can buy without having to buy an entire library?
>> I'd recommend "The art of electronics" by Horowitz and Hill.
>> It has most of the above topics, with fairly in-depth info.
>> Not synchro, which IIRC is a term for two stepper motors coupled back-back,
>> because when one is turned (above a certain speed) the other turns at
>> exactly the same speed.
>> Pretty rare nowadays, as you can do quite a lot better in most cases with
>> a chip, a rotary encoder and a stepper. (Synchros tend to lose a few steps
>> when they start and stop.)
> Small nit. A synchro is typically used as a rotary position sensor and
> was sometimes used to generate error signals in carrier control systems.
> In more recent times, they have been used as pure rotary position
> sensors. Analog devices and other made (make?) synchro to digital
> converters for this purpose. Another well know device for rotary and
> linear position sensing that used principles related to those of the
> synchro was the Inductosyn(tm). I haven't looked into position sensors
> lately but these magnetic devices offered advantages over other types of
> position encoders (brush and optical) in that they are more rugged and
> capable of being used in relatively harsh environments.
Hmm, I am now sure you are right.
I'm blanking on the term for what I wrote though.
http://inquisitor.i.am/ | mailto:firstname.lastname@example.org | Ian Stirling.
"The theory of everything falls out trivially." -- Etherman, sci.physics kook.
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