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a variable resistor is often called a control potentiometer ,
and would be used to supply a set voltage depending on the position of the wiper contact on the resistor assembly .
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an example would be a speed control device on a motor , including battery drill drivers , a mini hand held drill tool for use in craft projects , a volume control slide/ positioner , which controls the amount of signal and hence the volmue at whic music is played on a music system throu speakers.
it could also be used in lighting control circuits , such as dimmer controls .
where it sets the level of light output by varying the applied volatge to the lamp
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Electronic Discrete Variable Automatic Computer.
What does discrete mean?
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