Re: DRO: Inductosyn-3

--- In CAD_CAM_EDM_DRO@onelist.com, "Arne Chr. Jorgensen"
<instel@o...> wrote:

> Hi all,
>
> I burst out with all kind of "crazy" stuff :) Just don't expect

me to answer

> any questions, I am not sure if I am able to. I have some trouble

with my

> ISP, and they have planned to change all the mail services the in

the next few

> days. For the last month it has been terrible - I don't know what

to expect

> next )
>
> Well, I just wanted to add a few things:
>
> I may be wrong. I found that our list manager has answered Ian:
>
> >It is a capacitance based system, at one time there was an article

in one of

> >the HSM magazines about a guy making the strips at home, maybe

someone will

> >remember it.
>
> This could be correct. I was a bit puzzled when Ian wrote:
> "something like printed circuit board with diagonal cuts across it."
>
> This reminds me of something: Does anyone know how a digital

caliper works ?

>
> I have had an idea that it could be a magnetic strip, and I have

come up with

> some ideas of a " vernier scale " . I do know about some strange

capacitive

> measuring stuff - and I think this could be adopted to use use some

form

> of " vernier scale".
>
> It could be much more interesting to sum up a few pages about

different length

> measuring techniques, than just focus on optical linear strips.

Some said

> that they had made some absolute encoding linear strips, but there

is a lot of

> different stuff that may work out nice. What I wrote about the

"Inductosyn"

> was with such things in mind. But, I don't know much about these

- so I just

> opened up some other thread. I hope some of you could fill in a

little bit

> more on the subject I wrote, make it more correct, as much of what

I write is -

> just bursting out with stuff :) But maybe I gave someone a few

ideas, and then

> I think it has some value after all.
>
> So, back to a few questions:
>
> 1.
> Does anyone know how a digital caliper works ?
>
> 2.
> " at one time there was an article in one of the HSM magazines

about a guy

> making the strips at home, maybe someone will remember it. " Does

anyone have

> more info about this ?
>
> //ARNE

Digital calipers works with capacitive indultance that's all that I
know>