Week -2
1 .SIMULINK MODEL OF DOORBELL USING SOLENOID BLOCK :
AIM :To make a simulink model of doorbell using solenoid block .
CONDITION : Create a situation where the switch is closed for 2 seconds and released.
REQUIRED BLOCKS :
- Pulse Generator
- Switch
- Battery
- Electrical Referance
- Solenoid
- Mechanical Translational Referance
- Idel Translational Motion Sensor
- Mechanical Translational Referance
Simulink Block Diagram :

Input pulse Rate :
| Amplitude | 1 |
| Period (sec) | 4 |
| Pulse Width | 50 |
| Phase Delay (sec) | 2 |

Output :
CONCLUSION :
By help of Pulse generater we conclude that the bell is ringing after completing each 1 cycle or 4 seconds.
2 .
AIM : To create a simulink Model of Thermistor to sence the temperature of a heater and Turn on and Turn off the fan .
Condition : 20 C from 0 to 10 second,27 C from 10 to 30 second,23 C from 30 to 50 seconds. Fan ON if temperature above 25 C and off otherwise.
REQUIRED BLOCKS :
- Repeating sequence stair .
- Controlled Temperature Source.
- Thermistor
- Vottage sensor
- Bettery
- switch
- Lamp
- Scope
- Display
- Ps-simulink converter
- Simulink-ps converter
- Resistor
- Thermal referance
SIMULINK BLOCK DIAGRAM :

Here We can control the output value through repeating sequence Stair .thats is shown here.
RESULT :
When temperature is above 298 k :

When temperature is below 298 k :

INPUT PULSE :

