What does variable resistor actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

When current passes through a resistor it generates heat, and the thermal reaction causes mechanical changes by differential expansion in the different materials. Ambient conditions have the same ...

Higher tier - variable resistor Moving the position of the slider on this resistor, changes the length of wire in the circuit which changes the resistance.

Industrial facilities commonly use variable-frequency drives (VFDs) to control the speed at which alternating current motors operate. Let’s examine a couple of typical scenarios commonly encountered ...

They do this by changing the length of some resistance wire in a circuit. The circuit diagram below shows a variable resistor being used to control the current through a bulb.

You can use a photoelectric FET as a variable resistor or a potentiometer in combination with a fixed resistor. The H11F3M photoelectric FET has an isolation voltage of 7.5 kV, enabling you to safely ...