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For all you analog heads out there that refuse to sell out to digital! *retardo
Thought I'd share a pretty cool device I found call the Sine-Cosine Hallpot Resolver. Just feed it +5V and you get a perfect sine/cosine output.
Expensive little guy but built really well. There are no internal contacts to wear out, just a magnet and a couple coils of wire.
These are available at hallpot.com!
Attachment 50816
https://www.youtube.com/watch?v=naJOAss0w1A
enjoy!
Neat little pot. Have never seen one.
What are they used for ??
Jerry
They get used in synchro/resolver systems a lot. Used to be used a ton in old military fire control systems.
I've heard of a couple different uses, not many, which is why they are so expensive due to so little demand. They are a perfect solution for a project I've been working on though.Quote:
Originally Posted by lasersbee
Are you building a fire control system, DZ??? ;)Quote:
Originally Posted by DZ
Those guys are only about 30 miles from me
I have some sin cos pots. Used in early analog X,Y,Z vector rotator circuits.
I've seen resolvers used on servos in industrial control, helpful to determine rotation direction and speed. Good stuff!
Thanks for the feedback on these Sine-Cosine Pot uses guys.
Jerry
:cat:
Very cool gadget,,,, thanks for link! :cool:
Cheers :)
>:)Quote:
Originally Posted by dkumpula
Wow, I had forgot all about that thread! I had looked around for the Bourns pots like that but couldn't find any. That's when I stumbled across the Resolver. I'm using it for a manual way of rotating the z axis out of a console. Basically, I can switch between an image automatically rotating via a VCQO or have the image locked to the rotational position of the Resolver. It works very well!Quote:
Originally Posted by Photonbeam
That said, I had about a dozen of these little boards printed, I will likely not use all of them. If anyone here is considering one of the Hallpot Resolvers I'll send you a bare board for free. Or populated with parts for $10.
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