On Jul 3, 3:22 pm, JeffM <jef...@[EMAIL PROTECTED]
> wrote:
> tj3 wrote:
> >Given a rotor with 6 magnets of alternating polarity,
> >I need to count the steps as the rotor turns.
> >I've got a coil next to the rotor as a sensor.
> >The question is how to turn the coil signal (current)
> >into a pulse train that an MCU can count.
>
> You're not ready to post to a *components* group yet.
>
> Put a scope on the sensor (coil) and quantify what you have.
> Load it several ways and see how it changes.
> Once you have some VALUES about *how much*,
> THEN you can start thinking about *how* and *what*.
OIC. I should built it *BEFORE* iI design it. Thanks, but even I
know better than that.
BTW, you aren't ready to post a reponse to a query in any news
group. If I had to bet it would be that you never will be.
/tj3
P.S. The known values are as follows:
50 MGOe NIB magnet, D=750 um, T=750 um.
air gap : 100+/=15 um
coil : D=500 um (A=2.5e-7m^2), turns=40
Vrel = 100 m/s
|
