Week -2

AIM: To make a simulink model of doorbell using solenoid block and to make a simulink model of a thermistor to sence the temperature of heater and turn on or turn off the fan as per the temperature conditions .

DOORBELL USING SOLENOID:

The solenoid is a electromagnet. On passing current through the conducting wires a magnetic field is generated around it which attracts magnetic materials. this phenomenon is used in the bell . when the switch of the bell is pressed the current passes through the circuit exciting the electromagnet and pulling the plunger towards the metal portion . this produces a ringing sound.

SIMULINK MODEL;

IN THE SIMULINK MODEL I HAVE USED A PULSE GENERATOR BLOCK AS AN INPUTE. THE PULSE IS SUCH THAT, EVERY 10 SECONDS ITS ON