Potentiometers and rheostats are variable resistors required to adjust voltage or current levels, depending on whether they are connected in parallel or in series. The 3 and 5 watts potentiometers manufactured by Torivac are characterized by their small size, linearity, smooth and accurate handling and long life. The rheostats, on the other hand, are mainly characterized by their high heat dissipation and wide range of single, double and triple power ratings.

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