Electronics

Modulation is performed at the broadcast station to relay audio signals to the receiver over a greater distance. Since the modulated wave is picked up by the radio's receiver, the audio signal needs to be retrieved from it. In a radio receiver, this phase is received and is called demodulation.

Modulation: 

There are many types of Home Automation Systems like Bluetooth Controlled, Internet Controlled, RF Controlled, Remote Controlled (IR Remote) etc. Each type has its own advantages and disadvantages. In this project, we have designed a Voice Activated Home Automation system, where different appliances are controlled by sending a Voice Command.

The Voice Activated Home Automation project is implemented using Arduino UNO, Bluetooth and a smart phone.

In this project, a simple Voice Activated Home Automation system isdesigned. Voice commands are used to control different appliances.

KEY POINT OF ELECTRONICS

Basic Introduction Questions
 

1. What is control system?

Answer: A control system is a system that takes some input and performs some operations on it and gives us the controlled or desired output. 
 

2. What are the different types of control system?

Answer: Control system can be of many types depending on the type of input and output.Some basic types of Control Systems are:

DEFINITION

An amplifier is a device that increase the voltage, current or power of an input signal with the aid of transistor by furnishing the additional power from a separate dc source.