| Potentiometers |
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| • | Example of
variable resistor used as |
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| potentiometer |
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| – | Volume control on
a receiver |
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| • | Moveable
terminal is at uppermost position |
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| – | Vbc
= 60 V |
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| • | At the lowermost
position |
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| – | Vbc
= 0 V |
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