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Hall Effect Sensor

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NormanV:
I wish to fit a tachometer to the milling machine that I am building, I have bought one but the sensor is too large to fit in the available space. I have almost no knowledge of electronics, could anyone suggest a smaller replacement for the sensor that I have, it measures 62mm long x 12mm dia. The diameter is not the problem, it is the length.
Here is the data from the sensor that I have.
Thanks, Norman

John Rudd:
Norman,
I got some Hall effect sensors from EBay.......
Already mounted on a pcb with connections ready to wire up to tacho....around a couple of quid iirc....
Only thing is they come from afar if you can wait?

http://www.ebay.co.uk/itm/Hall-Sensor-Module-for-Magnetic-Field-Detecting-0-15V-/320748421434?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item4aae18813a


http://www.ebay.co.uk/itm/Hall-Entry-Sensor-Module-for-Magnetic-Field-Detecting-0-15V-DC-/181192549703?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2a2feae547        ,
Even cheaper.....

NormanV:
Hi John, thank you for your speedy reply.
This is the sensor that I have.
It is completely enclosed, and safe from debris. I was hoping that there might exist a similar product but in a smaller package.
Norman

Chuck in E. TN:
You can use a hall effect transistor, about the size of a pencil eraser, and enclose the leads and the sensor itself in heat shrink tubing. Should be available at your local electronics shop.
The hall effect uses a small magnet to trigger it. I used one for the pickup on my X2 mill.
Chuck

John Rudd:
Chuck,
Trouble is here in blighty that we don't have shops like you that side of the pond....so he'd struggle...

I suggested the little module to save him the aggro...
His choice......

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