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What is the function of this item ?

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jeolex

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Hello my friends,

Last week I found a very old mixer for laboratuary. Someone has thrown it to wreck yard. It has an ac motor and some components inside of it such as transformer, switch buttons and an item that I have only prediction about it (below).

WP_20160517_001.jpgWP_20160517_002.jpgWP_20160517_003.jpg

Probably this item help us for adjusting to motor rpm. This have a range between 0 - 260 V and when we turn the wheel, this voltage value changes. So what is exactly name of this component and what is the function of it ? Could you please inform me ?

Best regards.
 

It's almost certainly a variac (variable transformer or autotransformer). It accepts house voltage. By turning the dial you get a range from zero to 260. A valuable item for your workbench.

The label has 'Inom' of 1A. That must be its current rating. Do not draw more than that amount, or else you'll start to burn the windings.
 
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    jeolex

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That is one really good VARIAC!

It is rated 50 to 400 Hz, si it must be made of very high grade steel.
 
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