resistor
Sign in to savethumb|upright=1.2|right|Various resistor types of different shapes and sizes
AI overview
A resistor is an electronic component that limits or controls the flow of electric current through a circuit. Resistors are essential building blocks in electronics because they protect other components from damage, help create different voltage levels, and allow devices to function properly.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Electronic component.name
- Resistor
- Electronic component.image
- Electronic-Axial-Lead-Resistors-Array.png
- Electronic component.caption
- An array of axial-lead resistors
- Electronic component.type
- Passive
- Electronic component.working_principle
- Electrical resistance
- Electronic component.terminal_number
- 2
- Electronic component.symbol
- 100px 100px
- Electronic component.symbol_caption
- ANSI and IEC symbols
via Wikipedia infobox
Article
44 sectionsContents
- Electronic symbols and notation
- Theory of operation
- Ohm's law
- Series and parallel resistors{{anchor|Series_and_parallel_circuits}}
- Power dissipation
- Nonideal properties
- Fixed resistors
- Lead arrangements
- Carbon composition
- Carbon pile
- Carbon film
- Printed carbon resistors
- Thick and thin film
- Metal film
- Metal oxide film
- Wire wound
- Metal foil resistor
- Ammeter shunts
- Grid resistor
- Special varieties
- Variable resistors
- Adjustable resistors
- Potentiometers
- Resistance decade boxes
- Special devices
- Measurement
- Standards
- Production resistors
- Resistance standards
- Resistor marking
- Preferred values
- SMT resistors
- Precision resistor markings
- {{anchor|3-char-resistor-marking-code}}EIA-96 marking
- Industrial type designation
- Common usage patterns
- Current limiting
- Voltage divider
- Pull-down and pull-up resistors
- Electrical and thermal noise
- Failure modes
- See also
- References
- External links
thumb|upright=1.2|right|Various resistor types of different shapes and sizes
A resistor is a passive two-terminal electronic component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, 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.