Basic concepts

Solid State Relay Working

A solid-state relay (SSR) is an electronic switch that, unlike an electromechanical relay, contains no moving parts. Although EMRs and solid-state relays are designed to perform similar functions, each accomplishes the final results in different ways. Unlike electromechanical relays, SSRs do not have actual coils and contacts. Instead, they use semiconductor switching devices such as …

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Wheatstone Bridge Working Principle

Wheatstone Bridge Working Principle   Wheatstone devised a bridge-arrangement of resistances by which the resistance of a given conductor can be determined. This arrangement is called the ‘Wheatstone bridge‘.   In the arrangement, four resistances are so connected as to form a parallelogram. In one diagonal of this parallelogram is connected a galvanometer and in …

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Properties & Applications of High Resistivity Materials

High resistivity materials are used for making resistance elements for heating devices, starters for electric motors, resistances used in precision measuring instruments, loading resistances and rheostats and filaments for incandescent lamps.   High resistivity materials are used in all such applications where a large value of resistance is required. If low resistivity materials were used …

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Creep in Materials

Hi friends, In this article, I am discussing the “Creep in materials.” Types of creep and creep strength. So let us start. Metals will deform under steady service loads less than the short-time elastic strength if the loads are applied for a very long time at temperatures near the crystallization temperature. Apparently, the atoms tend …

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