GoldenTiger,
That one is single turn (revolves only <360º. Not good because a single turn VR causes a really steep decrease in resistance once you tune it.
I always use multiturn Spectrol VRs for applications where accuracy of the resistance is critical.
Here's a good 500Ω 24 turn VR from Spectrol:
http://export.farnell.com/jsp/Passiv...sp?sku=9608710



. Not good because a single turn VR causes a really steep decrease in resistance once you tune it.
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