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by Tarun Agarwal 11 years ago

Steps to Fabrication of MEMs

Micro Electro Mechanical System is a system of miniaturized devices and structures that can be manufactured using microfabrication techniques. It is a system of microsensors, microactuators, and other microstructures fabricated together...

by Tarun Agarwal 11 years ago

Operational Amplifiers

What are Operational Amplifiers? Operational amplifiers are the basic building blocks of Analogue electronic circuits. They are linear devices with all properties of a DC amplifier. We can use external resistors or capacitors to the Op...

by Tarun Agarwal 11 years ago

Basic Intrusion Detection System

Look at this quote by Admiral Grace Hopper “Life was simpler before world war II. After that we had systems” So, what does this actually means? With invent of systems (computer systems) came the increase for various needs...

by Tarun Agarwal 11 years ago

Digital Thermometers and Its Applications

Thermometers A thermometer is a device used to measure the temperature of any particular device or living body and displays the reading. A thermometer scale can be in Fahrenheit or Celsius. 2 Kinds of Conventional Thermometers used earlier 1....

by Tarun Agarwal 11 years ago

Sensors – Types & Applications

Pressure Sensors Pressure sensors are generally used to measure pressure of gas or liquids. Usually a pressure sensor acts as a transducer. It generates the pressure in analog electrical or digital signal. There is also a category of pressure...

by Tarun Agarwal 11 years ago

Sound Activated Switch

Consider a situation in a bank or any organization where a sudden invasion by the burglars has taken place. Now all the staff has been handcuffed by the robbers and the main locker room full of valuable resources is at the mercy of the...

by Tarun Agarwal 11 years ago

Voice Recording and Playback Circuit

You can make a voice recording and playback circuit using the easily available IC APR 9301. The circuit can record and playback the voice up to 30 seconds. It can be used in automatic answering devices, door phone, etc. The IC APR 9301...

by Tarun Agarwal 11 years ago

How Does an Electronic Nose Work?

Introduction: The electronic nose is a device that detects the smell more effectively then the human sense of smell. An electronic nose consists of a mechanism for chemical detection. The electronic nose is an intelligent sensing device...