How & Why

Explanation with detailed solutions for the stupid but interesting questions asked by students and teachers while learning at Vidyasagar Academy.

graph of ac voltage

Concept of AC voltage – Learn in simple language

This entry is part 11 of 12 in the series Basics of Electricity

In this article, don’t forget to read the reference notes. Power supply is the basic requirement of any working circuit or device. We know that the electronic circuit uses semiconductors and so the circuit requires only DC power supply for…

Read MoreConcept of AC voltage – Learn in simple language
How analog pin works & how PWM signal is obtained in Arduino UNO/Nano?

How analog pin works & how PWM signal is obtained in Arduino UNO/Nano?

In new type of Arduino boards with the ATMeaga168 chip, the pins 3, 5, 6, 9, 10, and 11 work as PWM pins. Older Arduino board with an ATMega8 chip has only pins 9, 10, and 11 as PWM pins. The value can be specified as a variable or constant with a value from 0-255.

Read MoreHow analog pin works & how PWM signal is obtained in Arduino UNO/Nano?