Rheostats: Learn About Rheostats Here > Rheostats are variable resistors or adjustable resistors used to divide voltage in applications that require the adjustment of resistance in an electrical circuit.
Rheostats, like potentiometers, are generally used in applications that demand variable control for higher amounts of voltage.
As a result of the reduction of size and power consumption in many of today's electrical devices, rheostats, are not as frequently found in commercial and
industrial products. Rheostats, in large, have been replaced by potentiometers, triacs and SCRs. However, rheostats are still commonly used for applications requiring a
large amount of current or high voltage. Common utilization of rheostats include light dimmers, motor speed regulators, arc lamps, pumps, fans, respirators,
x-ray devices and medical apparatus.