Sliders in audio mixer Light-dependent resistor or photoresistor Used in a number of sensor applications. Varistor Used for spike and surge protection. Fusible resistors They are widely used in TV sets, amplifiers, and other electronic circuits. Most of the electrical circuits-based devices in our homes use resistors like remote control, mobile chargers, TV sets, hairdryers, etc.
Electrical equipment like heater rods, kettle, iron, bulb, etc. See Also 10 Difference between motor and generator 20 Types of battery 5 Difference between earthing and grounding Share this: Twitter Facebook. Recent Posts. Azeotropes admin - November 4, 0. Azeotropes are mixtures of two or more liquids whose proportions cannot be changed by simple distillation. Generally, mixtures have varied boiling points and can Azeotropic distillation admin - November 4, 0.
Azeotropes are a mixture of liquids where the proportion of the liquids eg: , , cannot be altered by simple distillation. Benzene admin - November 4, 0. Benzene is an organic compound composed of 6 carbon atoms connected together to form a planar ring-like chemical structure. Each carbon atom has one Formula For Tension October 1, How much do you know about corona virus? Take this quick March 10, Friction a necessary evil: Explain with examples May 18, Load more.
Disclaimer Privacy Advertisement Contact Us. How can we increase friction? Resistors are composed of conductors or semiconductors. The most common ones are formed from carbon encased in lacquer. The next most common ones are made from coils of metal wire. Regular resistors are basically linear. Other types may be variable or nonlinear or both and these include potentiometers, varistors, thermistors and photoresistors.
An important function is when a resistor is used as a heating element as in the case of irons, toasters, heaters, electric stoves and hair dryers. Resistors also produce light as filaments in light bulbs. Variable ones may function as sensors, switches or voltage dividers. Kim Lewis is a professional programmer and web developer.
She has been a technical writer for more than 10 years and has written articles for businesses and the federal government. Transistor Biasing: Through one of my previous articles you must have acquired good knowledge regarding transistors. But the base of a transistor is quite vulnerable to high currents, so a resistor is incorporated to limit the current and provide a safe biasing voltage.
The value of the base resistor of a transistor may be calculated through the below-given formula:. A resistor when placed in series with the LEDs regulates a proper flow of current through them. To calculate the value of a series LED resistor, the following formula may be used:.
In Timing Circuits: The timing components used in timer and oscillator circuits always incorporate a resistor and a capacitor. Here the time taken to charge or discharge a capacitor constitutes the basic time pulse or trigger for the circuit. A resistor is effectively used to control this charging and discharging process and its value is varied to obtain different time intervals. Surge Protection: The initial switch ON of a power supply may at times inflict a dangerous voltage surge into an electronic circuit, damaging its critical components.
A resistor when introduced in series with the supply terminals of the circuit helps in checking the sudden rise in voltage and averting possible harm. These resistors are generally of low values so that the overall performance of the circuit is not affected. The above basic examples must have provided you sufficient knowledge regarding the use of resistors in electronic circuits and helped you to understand what is the function of a resistor. For further information, feel free to add your comments comments need moderation and may take time to appear.
Q1: How many types of resistors are there based on the type of materials used? A: There are many kinds of resistors based on the type of material used to make the resistor: 1.
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