Tape drive try

[Bruce S]

Hello All;

Having just inherited this little gem.

And all those neat F&P units that seem to be fun to work with.

Thought I'd give it a go as well.

Little it is when compared to the F&Ps I believe are found elsewhere.

This gem came out of a server side tape backup system. A label on the controller shows 12Vdc 2.7A.

The area from one side where the wires are is right at 3inches in dia.

There are 3 phases, with a total of 18 coils. Haven't gotten the wire size yet, but did Ohm it out and counting even the Ohm of the Fluke 87 cables, only read 0.7Ohms.

I'm a little suspect of this, but can't do any better until I get home and read it on a VTOM.

There's a circular magnet on the outside and the center is wide open for magnets spacing. I do have a lot of little Neo-type HD mags that should give me a little something.

Thoughts?

I'm beginning to agree 'mills are funner to watch than PVs

Bruce S

[ghurd]

I have some about like that.

Just like this,

http://www.fieldlines.com/story/2006/8/8/222021/1354

Lame magnet ring in mine.

Mine only make like 3VDC open at 600RPM, factory wired Star.

Makes over 3A Isc, IIRC.

Considered trying it with voltage doublers.  Never got a round tuit.

G-

[Bruce S]

G-

I knew there was something up here that I had seen! same type of style right down to the color or the magnet ring!!

That's what happens when work and googling mix :/:

It is indeed wired star. I have pulled the phases apart from the first unit.

The newer HDs have some interesting sized mags in them I have no less than 3 that are 1/2mm square, even too small to take picture of

The ring's mag is lame at best. Since there are two I will give the other one a spin and see what we see. I have an LED or two that are feeling unused

Thanks

Bruce S

 

[ghurd]

What is the height, thickness, OD and ID of the lame magnet?

G-

[Bruce S]

G-

All measurements is inches

ID=1.875 OD=1.900 H=0.500 This with a steel backing that is OD=1.749 ID=1.652 H=.425

AND as the previous post states, there are 4N & 4S.

The spindle  the mag/backing plate bolts to tapers from a 1.25 to a 1.30.

Knowing this there is certainly room for smaller backing and larger (thicker mags.).

Will be good to "play" with.

Bruce S