Re: Capacitor Help

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Michael Rowe" <lozinit@xxxxxxxxx>

This is similar to what I did. I can't take credit for the initial design,
but all it involved was a trip to radioshack.
I purchased a 3 pack of cheap translucent calculators, and a magnetic reed
switch.

I popped open the case of the calc. and soldered the pigtails of the reed
switch to the equal button.
Then I attached the magnet portion of the switch to the form.

Simply wind two turns of wire on the form, turn the calculator on, press
"1+1" on the calc., start the form to spinning and each revolution then
increments the calculator by 1.

It's dirt cheap, and works.
 The only possible problem is taking a break. The very first time, I had to
kind of rush my breaks (It took 3 hours, I wound it REAL slow) for fear that
the calculator would auto shut off and I would lose my count.



----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, December 18, 2005 6:35 PM
Subject: Re: Capacitor Help


> Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
>

I personally like to know exact turns, so I
> attach a 24VDC PNP inductive proximity sensor near one end and attach
> a small metal flag to the end of the form. As the form turns, the
> flag rotates in front of the sensor. The sensor output drives a
> counter (simple and sweet).