Week -2

1. Make a Simulink model of Doorbell using solenoid block with the following details:

In the above arrangement, when the switch is closed the electromagnet receives electrical power from the battery and pulls the metal arm to hit the bell producing sound.

Create a situation where the switch is closed for 2 seconds and then released. Observe the physical movement of the plunger

• Initially we need to switch with battery connection.
• And connect it through the solenoid actuator.
• First we need create Pulse generator to switch with simulink PS connection.
• Then we need to connected through solver configuration to avoid errors.
• For 2 seconds the switch will activate and closes the switch then the solenoid will activate and door bell will ring.

2. Use a thermistor to sense the temperature of a heater & turn on or turn off the fan as per the below conditions:

Temperature source: 20 °C from 0 to 10 seconds, 27 °C from 10 to 30 seconds, 23 °C from 30 to 50 seconds

Fan conditions: ON if the temperature above 25 °C, OFF otherwise