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How Electric Drums become Electrically Polarised

How Electric Drums become Electrically Polarised

by Steve Wotherspoon | Dec 27, 2017 | Electric Brakes | 0 comments

Here is a simple test for your electric drums to test to prove polarisation. Point your trailer coupling facing north or south. Residual magnetism can be excess positive ions(North Pole) or excess negative ions (South Pole).

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