Resistors

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Resistors

1713 7 Apr 22.2022, 11:50:37

Resistors (R)

The resistor is one of the most-used components. As the name suggests, it resists the flow of current through a circuit. The greater the resistance of the conductor, the less the current can flow. It is represented by the letter R with the unit of resistance ohms, symbolized as Ω.

Resistors come in many physical sizes, shapes, and values based on the different materials they are used. It can be divided into two types: fixed resistors and variable resistors. A fixed resistor is made of materials with properties that hinder the current. Its resistance value is fixed while the value of variable resistors can be changed by control.

Fixed resistors	Variable resistors
Wire Wound	Light-dependent resistor
Carbon composition	Force-sensitive resistor
Carbon film	Thermistor
Metal film	Humistor
Metal-oxide film
Metal glaze
Foil

Fixed resistors are commonly used in electronics circuits, among them the most favored one by beginners and hobbyists is the axial style that has leads on both long ends and colored bands on the body to indicate resistance value, tolerance, and sometimes even temperature coefficient of the resistors. The advent of surface mount technology brings tiny components including resistors which can be observed on many PCBs nowadays.

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Jan 10.2024, 16:03:25

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J****han

Dec 04.2023, 22:39:40

Thanks for the info on resistors! It's interesting to know how they resist current flow. The breakdown of fixed and variable types, along with examples like wire-wound and light-dependent resistors, is helpful. The mention of axial style for beginners and the impact of surface mount technology provides a clear snapshot of their use in circuits.

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Nov 24.2023, 11:21:27

Resistors are used to create filters in electrical circuits. These filters can be used to remove noise slope or to generate electrical signals of desired frequencies.

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