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The electricity demand increasing tremendously from last few decades. The increasing demand of lands and few government policies are the constraints in expanding transmission infrastructure. Hence there is no way other than increasing the ampacity of the existing transmission networks. This increases the need for High-Temperature Low-Sag (HTLS) conductors. Among the various HTLS conductors, INVAR … Read more
An attraction type moving iron instrument works based on the principle of attraction of a magnetic material towards the coil. Basic Structure Suppose there is a coil. We connect this coil with an electric source. Whenever we inject current into the coil, the coil will become a magnet. Obviously, this magnet attracts any iron pieces … Read more
A resistor is one of the fundamental components in circuits. It limits current flow or divides voltages in the circuit. Although all types of resistors serve the same basic function, different manufacturing methods and materials create distinctions among them. Each type has its unique characteristics suited for specific applications. Differnt Types of Resistors as Follows … Read more
A wire wound resistor consists of a winding of resistive wire wrapped around a non-conductive cylinder. This is the oldest type of resistor. Although we use wire wound resistors these days. Because these resistors provide high accuracy, better stability. Also, they can handle much more power than other types of resistors available for fixed resistor … Read more
A metal film resistor is a passive resistor. It uses a thin film of metal alloy deposited around a ceramic cylinder to provide the current path of the resistor. The ceramic cylinder provides mechanical strength to the resistor. The tolerance of the metal film resistor is quite lower than that of the carbon composition resistor … Read more
A carbon film resistor is first made by depositing a thin layer of carbon onto a ceramic (usually alumina) cylindrical substrate through a process called pyrolysis or vacuum deposition. Then, during construction, the carbon film is carefully trimmed or spiraled to achieve the desired resistance value. After that, metal end caps and lead wires are … Read more
What is a Carbon Composition Resistor? A carbon composition resistor is a simple electronic component. Engineers use it to control current flow in circuits. This resistor contains carbon particles mixed with clay material. Construction and Manufacturing Manufacturers follow a simple process to make these resistors. First, they mix fine carbon powder with ceramic clay. The … Read more
What is resistivity? Understand specific resistance, its units (ohm-meter), how material, length, area, and temperature affect conductor resistance. Laws of Resistance The resistance offered by a conductor depends upon four major factors. Length of the Conductor: One factor is the length of the conductor. That means if we increase the length of the conductor without … Read more
Electrical resistance is the opposition to electric current flowing through a conductor. Simply put, it blocks or reduces the movement of electrons through a conductor. When an electric current flows through a conductor, electrons drift from one end to the other end of the conductor. During this drifting, the moving free electrons collide with atoms … Read more
Let us discuss the effect of temperature on resistance. When the temperature of a conductor increases, its resistance also increases. This relation is linear. In other words, the change in resistance is directly proportional to the change in temperature. Mathematical Relationship If R1 is the initial resistance of a particular resistor or conductor at T1 … Read more