Week -2

Ans. 1

PRINCIPLE BHEIND DOORBELL:-

A doorbell uses a specialized sort of electromegnet called a solenoid. A solenoid is just a electromagnet where a metal piston surrounded by the copper coil. when there is no electric current through the coil the spring push the piston to the outside of the coil. but when we press the button or give the power to coil the piston move the center of coil and hit the metelic bar and produce sound.

These are the block diagram that we are used in this model:-

Pulse generater:- It is analog input that has amplitude and frequency with which the input is transmitted.

Ps Simulink and Simulink ps converter:- They can convert Physical signal to simulink signal and simulink to physical.

Ideal Transmition motion sensor:- it can provide the positio or velocity input for the signal.

Solenoid:- It is an Electromagnetic device.

Battery:- it is use for the power supply to the system.

switch:- it is a device that can open and close the circuit manully or automatically.

Solver configuration:- It works as a complete equations where f(x) = 0. we need to find the value of x.

INPUT PARRAMETER:-

In the Pulse generator

Delay second is:- 2 sec.

Amplitude :-1

Pulse time :- 4 sec.

Pulse weidth:- 5

OUTPUT:-

Ans. 2:-

Thermister:- It is also known as thermal resistor which resistance can varies with the change in temp.

And the condition belows:-

0-10sec temp. 20

10-30sec temp. 27

30 to 50sec. temp. 23

If the temp is more than 25 on the fan.