How to Wire a Variable Rate Rheostat
A rheostat connected in series with a voltage source varies the current from the maximum available to zero, depending on the position of the control. Rheostats control lighting, heat and motor speeds, but also have numerous other applications. A variable rate rheostat, more commonly known as a non-linear or logarithmic track rheostat, does not control the current evenly. Moving it halfway may control only 1/4, 3/4, or any fraction it is designed to change. With thousands available, you need electric skills sufficient to select and use all appropriate tools and hardware.
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Instructions
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1
Turn off the electric source on which you will be working.
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2
Connect one wire of the electric source to one end of the variable rate rheostat.
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3
Connect the other wire of the electric source to one of the input connections to the device you want to control.
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4
Connect a wire from the other side of the variable rate rheostat to the other input connection to the device you want to control.
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5
Turn the electric source back on.
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6
Vary the rheostat to see if it controls the device in the manner you wish.
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Tips & Warnings
Select a rheostat suitable for your application. Check voltage and current considerations, plus rate of change as the control is varied.
Use caution working around electric circuits. If they are energized, never work alone.
