Home Tutorials


This category contains tutorials to "how to use" a gadget in a friendly way.

Digital Multimeter images

Digital Multimeter working principle

What is a Digital Multimeter? A Digital multimeter or DMM is a test equipment used for resistance, voltage, current measurement and other electrical parameters as per requirement and displaying the results in the mathematical digits form...
Transistor amplifier diagram

Transistor as an amplifier: Common emitter amplifier circuit

More topics on transistor: Transistors basics Transistor operation  Transistor characteristics   Transistor configurations  Transistor as a switch Transistor oscillator circuit Darlington Transistor Amplifier is an electronic device which basically boost up the strength of the weak signal and converts...
Leds image

LED construction, working principle, Types, Bulbs and Advantages

Led or Light emitting diode is a semiconductor device that emits or produces light when an electric current passes through it. Led lighting can be more versatile, efficient and long lasting as compare to...

Recent Posts