Nu Source Technologies carries a wide range of resistors including potentiometers, rheostats, resistance wires, thermistors, high power resistors, trimmers, and all other variable resistors and fixed resistors.
Resistors are two-terminal components used to manage the flow of electric currents. This is done when a drop in voltage is created between two points, and the theory of Ohm’s Law is applied to figuring the voltage shift between the two various ends of the connector.
Resistors are one of the most common electronic components; there is virtually no working circuit that doesn't use variable resistors or fixed resistors, and a small number of practical circuits can be built using nothing else. Their uses are many, they are used to drop voltage, limit current, attenuate signals, act as heaters, act as fuses, furnish electrical loads and divide voltages.
There are two main classes of resistors; fixed resistors and variable resistors. Variable resistors consist of a resistance track with connections at both ends and a wiper which moves along the track as you turn the spindle. Variable resistors may be used as a rheostat with two connections or as a potentiometer with all three connections in use. Fixed resistors’ values of resistance cannot change.
There are three main parameters for resistors: resistance, power and voltage. The value of resistance in a power resistor is measured in Ohms. A 1000 Ohm resistor is typically shown as a 1K- Ohm resistor (kilo Ohm), a 1000 K-Ohm resistor is written as 1M- Ohm resistor (megohm).
The amount of power the resistor can handle safely is the next parameter. Large power resistors (physically) generally have a higher power rating than small ones, and this is always specified by the manufacturer. Excess power will cause the power resistor to overheat and fail.
Voltage is rarely specified, but the maximum voltage may sometimes appear across power resistors. It is a measure of the maximum voltage that may appear across any value of resistance for this style without breakdown, and has nothing to do with power rating, which may be exceeded at rated voltage.
Whatever you need, whether it be fixed resistors or variable resistors, from less than 1K- Ohm resistors to more than 1M- Ohm resistors, Nu Source can supply what you need.
Submit a quote request or call 888-257-5027 today, and let us know what we can do for you.