Surge Protector Circuits
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Surge Protector Circuit Diagram, Working, Types and Applications

A surge protector is an electronic protection device designed to safeguard electrical and electronic equipment from voltage surges (transient overvoltage). A voltage surge is a sudden and short-duration spike in voltage that exceeds the normal operating voltage of a system. These surges may last from a few nanoseconds to milliseconds but can reach several kilovolts […]

Piezometer
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What Are Piezometers? Working, Types and Applications

A piezometer is a geotechnical sensor that is employed for measuring porewater pressure at the ground level, which is called the piezometric level. Its main features are to measure water pressure in the earth, soil, and strong concrete designs. Pore pressure gauges provide data for the magnitude of pore pressures and evolution. We can also […]

Light Emitting Diode LED
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Light Emitting Diode LED – Symbol, Construction, Working, Types and Applications

The Light Emitting Diode (LED) is one of the most widely used electronic components today, found in everything from indicator lights to full-scale lighting systems. It is a type of diode that converts electrical energy into light energy, offering a highly efficient alternative to traditional bulbs. Unlike incandescent lamps that rely on heating a filament, […]

Electromechanical Relay
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Electromechanical Relay – Symbol, Construction, Working, Types and Applications

Electromechanical relay (EMR) is one of the oldest and still most widely used switching devices in electronics and electrical engineering. A relay is an electromechanical switching component that uses an electromagnet to mechanically operate a set of contacts. In simple words, a relay uses a small control signal (low power side) to switch large loads […]

Solid State Relay
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Solid State Relay SSR – Symbol, Circuit, Construction, Working, Types and Applications

A Solid-State Relay (SSR) is an electronic switching device that performs the same function as an electromechanical relay (EMR) but without any moving parts. Instead of mechanical contacts, it uses semiconductor devices such as thyristors, Triacs, MOSFETs, or transistors to switch electrical loads ON or OFF. Because there are no moving parts, SSRs offer longer […]