Prof. Dattaraj Vidyasagar

Prof. Dattaraj Vidyasagar

Author on this website. He is veteran of Core Electronics since last 36+ years. ATL Mentor of Change, Niti Ayog, Govt. of India, Google Certified Educator, International Robotics Trainer and author of 18 books on electronics, robotics, programming languages and web designing... ➤➤

Advanced Arduino Robotics Project #3, Arduino Security System cum Door Bell using Piezo Sensor

This is a very useful project for securing the premises of a sensitive area. It is Arduino Security System cum Door Bell using Piezo Sensor. The list of components is given below. First make all the components available with you and then start working on the project.
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12th Standard Electronics HSC Board Paper Solutions (Paper-1)

12th Electronics Previous Years HSC Board Question Papers PDF Copies

The 12th Electronics Previous Years HSC Board Question Papers PDF Copies is significant collection of scanned copies of previous years' HSC Board question papers available for free download. These question papers are direct scans from the original documents, ensuring that students receive accurate and authentic exam papers to practice with.
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IC 555 Bible: Everything About It!

What is Operational Amplifier? Explain its Characteristics & Parameters

An opamp is defined as the high gain direct coupled amplifier, which consists of one or more differential amplifiers with other supporting circuits. The operational amplifier can perform mathematical operations like addition, subtraction, integration, differentiation and comparison.
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What is the need for Dual Power Supply in Differential Amplifier? Compare working with Single & Dual Power Supply

The differential amplifier works good, on dual power supply only. However, if it is connected with single power supply, then it’s working becomes unstable. So its comparative points of its working for dual and single power supply are given below.
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How Piezo Electric Crystal works? What are the different axes of crystal?

The Piezo Electric Crystal is used to measure pressure. Piezo is an Italian word meaning pressure. It is very accurate in measurement. A piezo crystal is a transducer which can convert pressure into electrical signal. It is an active transducer. It is found that Rochelle salt and Tourmaline substances.
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What is transducer? What are the selection criteria of transducer?

What is transducer? What are the selection criteria of transducer?

Before discussing about what is transducer, first we shall see basic difference between sensor and a transducer. They both are used to sense a change within the environment they are surrounded by or an object they are attached to. However, a sensor will give an output in the same format and a transducer will convert the measurement into an electrical signal.
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Lissajou's patterns on CRO

How to measure frequency & phase using Lissajou’s patterns on CRO? Explain with diagrams

To measure the phase different between two waveforms, their frequencies must be same. Connect the two waveforms randomly at x-input and y-input of CRO. Keep time/div knob in x-y mode. Now a Lissajou’s pattern of an ellipse is obtained.
Read MoreHow to measure frequency & phase using Lissajou’s patterns on CRO? Explain with diagrams