A resistor is a two-terminal passive electrical component that controls the flow of current in electrical and electronic circuits.
Resistance is the property of a material to resist current flow. The ohm (Ω), named after German physicist Georg Simon Ohm, is the unit of resistance measurement. Resistors come in a variety of sizes. Its size is related to the amount of power it has.
In the manufacture of electronic equipment, resistors of all types are utilized in large quantities. In fact, the resistor is the most commonly used electronic component in electrical and electronic circuits.
Resistors can be classified into two, fixed and variable resistors.
Fixed resistors are used in circuits to achieve the desired results. Since they were determined during the design process, their values should never be modified to adapt the circuit. It could be made of carbon or coiled using chip-and-wire. It can also be formed from a finely ground carbon combination, or it can be very small and powerful.
Fixed resistor parts are combined with a slider in variable resistors. The slider connects to the main resistor element, resulting in three connections: two to the third element and one to the slider. Potentiometers, rheostats, trimmers, and other similar devices are examples of this.
The following is a list of basic resistor characteristics:
Inductance, Resistance, Power, Temperature Coefficient, and Noise
- The maximum amount of power that a resistor can dissipate without being destroyed by excessive heat build-up is called the power rating. A resistor's surface area determines how much power it can dissipate.
- Tolerance refers to the percentage of error in a resistor's resistance, or how far a resistor's actual measured resistance deviates from its stated resistance. A gold tolerance band equals 5% tolerance, a silver tolerance band equals 10%