22 ohm Resistors

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Resistors reduce current flow in electronic circuits, a property that is utilized to adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power resistors that can dissipate many watts of electrical power as heat may be used as part of motor controls, in power distribution systems, or as test loads for generators. Fixed resistors have resistances that only change slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements (such as a volume control or a lamp dimmer), or as sensing devices for heat, light, humidity, force, or chemical activity.

Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds and forms. Resistors are also implemented within integrated circuits.

The electrical function of a resistor is specified by its resistance: common commercial resistors are manufactured over a range of more than nine orders of magnitude. The nominal value of the resistance falls within the manufacturing tolerance, indicated on the component.

• Fixed Value Resistors. These are the predominant type of resistor configuration, and as the name suggests, they have a fixed resistance value. …
• Variable Resistors. …
• Resistor Networks. …
• Carbon Film Resistors. …
• Metal Film Resistors. …
• Wirewound Resistors. …
• Metal Oxide Resistors. …
• Metal Strip Resistors.

What is the purpose of resistor?

A resistor controls the flow of the electrical current within a circuit. Resistors are made from materials like copper or carbon, which make it difficult for the electrical charges to flow through a circuit.

What are resistors made of?

Most common, modern resistors are made out of either a carbon, metal, or metal-oxide film. In these resistors, a thin film of conductive (though still resistive) material is wrapped in a helix around and covered by an insulating material.

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