Information about Current Sensing Resistors

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About Current Sensing Resistors

Current sensing resistors convert the current flowing through them to a voltage drop. Monitoring or measuring this voltage drop allows the current through the resistor to be measured. With current sensing resistors, materials of construction and configuration style are important parameters to consider. In terms of materials, choices include carbon composition, carbon film, ceramic composition, metal alloy, metal film, thick film (chip), thin film (chip) and wire wound. For configuration style, choices include single resistor, resistor network, and resistor chip array. Single current sensing resistors have a single resistance value. Current sensing resistor networks feature a pin layout with multiple resistors connected in series. By contrast, current sensing resistor chip arrays connect multiple resistors in parallel.

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Chip Resistors

Chip resistors are passive resistors with a form factor of an integrated circuit (IC) chip. Typically, they are manufactured using thin-film technology.

Digital Potentiometers

Digital potentiometers are three-terminal resistors with an adjustable center connection. To set the output resistance, a digital signal is sent through an electrical interface.

Potentiometers, Rheostats and Trimmers

Potentiometers, rheostats and trimmers are three-terminal resistors that are used to measure or divide voltages, and to protect or control circuits.

Power Resistors

Power resistors are used in power generation and distribution, high-voltage applications, control systems, and other power system applications. They include load banks, grounding resistors, and dynamic braking resistors.

Resistor, Capacitor Networks

Resistor, capacitor networks (RC networks) are integrated circuits (ICs) that contain resistor-capacitor arrays in a single chip.

Resistors

Resistors are electrical components that oppose the flow of either direct or alternating current. They are used to protect, operate, or control circuits.

Shunt Resistors

Shunts resistors are connected in parallel with an instrument or component to divert electrical current. They provide an alternate path for current in case of failure.

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