Sealed variable resistor

Details Sealed variable resistor Sealed variable resistor

H - Electricity

01

C

338/17

H01C 1/024 (2006.01) H01C 10/14 (2006.01) H01C 10/34 (2006.01)

Patent

CA 2030485

1-137428 Abstract of the Disclosure The disclosure relates to an improvement of a sealed variable resistor which comprises enclosing a variable resistor and an arm member attached to a shaft of the variable resistor in a sealing container, and rotatably supporting a dial knob about a shaft outside the sealing container such that when the dial knob is energized, the arm member moves in association by virtue of magnetic force. The reliability and operability of such a sealed variable resistor are extremely improved by forming the arm member and dial knob into a circular plate, and attaching to the arm member and dial knob at least two magnet pairs apart from each other. These render the sealed variable resistor very useful in various electrical devices which may be exposed to moisture when in use.

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