Week -2

1ANS:- SIMULINK MODEL OF DOORBELL USING SOLENOID

REQUIRED BLOCKS :-1.solenoid

2.battery

3.switch

4.ideal translational sensor

5.puls genrator

6.scope

7. ps.simulink converter

8.simulink to ps converter

9.solver configuration

10.electrical reference and translational reference.

HOW TO BUILD A DOORBELL BY USING ABOVE BLOCKS:-

1. First i connect to switch,battery and solenoid in single loop.
2. and the puls genrator is connected to the input of the switch bu using s-ps converter.
3. and solver configuration is connected to output of the s-ps puls generator.
4. ideal translational sensor is connected to the solenoid .
5. scope is connected to the output of the translational sensor by using ps-s converter.
6. the parameters of solenoid and translational sensor connected to R-R,C-C,and also cpnnected translational reference also connecteed.
7. electrical reference is connected to single loop circuit.
8. set puls generator puls delay is 2sec..

and observe the results of above model of doorbell using solenoid given link..

2ANS:-

AIM:- TO use a thermistor in simulink to sens the temperature of a heater and turn on or turn off the fan as for the below condistions.

1.temperature 20°C from (0-10sec)

2.temperature 27°C from(10-30sec)

3. temperature 23°C from (30-50sec)

Fan condition if temeprature is above 25°C turn on

Reuired blocks:- 1.Thermistor

2.battery

3.switch

4.signal builder

5.voltage controlled sensor

6.current controlled sensor

7.tempratue controlled source

8.scope

9.thermarl refeerence

10.solver configuration

11.divide

12.ps-s/s-ps converter

THERMISTOR:-thermistor is a thermarlly sensitive registor.predictable change in thermistor the resistance propotional to the temperature..there are two types pf thermistor..

they are:-

1.NTC:- negative temperaturre coefficient.here dicrease the resistance and temeperature is increased.

2.PTC:-positive temeprature coeeficient .here increse the resistance and temperature is also incresed.

here im using 'NTC thermistor'..

model of thermistor using sens the temperature of heater and turn of the fan below simulink model..

here. T =20°,27°,23° its converts kelvins simply add the temperature on 273

exp:- 20°+273=293k

and find the volage by using voltage control sensor and find current by using current sensor is shown in above model.

by using signal buillder apply the 3 conditions ..