Mechatrofice Blog

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Distribution Board Wiring Diagram – How to wire DB

Distribution Board or DB is an electricity supply system or a common enclosure that distributes the electrical power feed into subcircuits. It includes isolator, RCCB (Residual current circuit breaker) or RCD (Residual-current device) devices, protective fuses or MCB’s (Miniature Circuit...

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Send GPS Location Via SMS GSM Arduino

The main three components in this project are GPS (Global Positioning System) module, GSM Module, and an Arduino Uno. Here we are sending the live coordinates received by the GPS receiver module to a...

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Arduino Ammeter – Measure DC Current

An ammeter is an instrument used to measure current flow in a circuit, which is measured in amperes. In a Digital ammeter, we measure the voltage across a shunt resistance, which is series to...

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Different Types of Rectifiers and Working

A rectifier is an electronic circuit which converts Alternating Current into Direct Current. Based on the type of input supply, rectification and output it can be classified into different types. Single Phase Rectifier Single...

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3 Phase Rectifier – Half Wave and Full Wave

A 3Φ Rectifier is an electronic circuit that converts three-phase AC supply into unidirectional DC output. 3 phase rectifiers are mainly used in industrial and high power applications. In a three-phase electric power, an alternating...

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Operational Amplifier Viva Interview Questions and Answers

What is an op-amp? An operational amplifier is a direct coupled high-gain electronic amplifier with a differential input to which feedback is given to control its response characteristics at its single-ended output. What is called a differential...

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Transformer Questions and Answers Interview Viva

  What is the operating principle of a Transformer? A transformer works based on the principle of mutual induction. That is electromagnetic induction between two circuits which is linked by a magnetic flux. What...

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Electrical & Electronics Quantities Units and Symbols

Electrical Quantity Quantity Symbol Unit Unit Symbol Admittance Y Siemens Ω−1 Apparent Power S Volt-Ampere VA Capacitance C Farad f Charge Q Coulomb C Conductance G Siemens Ω−1 Conductivity σ (sigma) siemens per metre...