Challenge

Week -2

OBJECTIVE:

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

SIMULINK MODEL:

EXPLANATION:

For the above circuit we need battery, pulse generater, switch, solenoid, ideal translational motion sensor and scope.
Battery and pulse generator are connected to switch.
Battery voltege is 12V with 2 ohms internal resistence.
Pulse generator parameters and output are shown below.

The '+' terminal of solenoid is connected to switch and '-' terminal is connected to battery.
R and C terminals of solenoid are connected to Ideal translational motion sensor to moniter the movement of the plunger.
Output of sensor is connected to scope to plot the output graph.
Below graph shows the final output of the solenoid.
It is clearly seen in the graph that the bell ON for 2 seconds and OFF for other 2 seconds.

OUTPUT GRAPH:

OBJECTIVE: To sense the temperature of a heater using thermistor and turn on/off a fan as per the given condition.

BLOCK DIAGRAM AND ITS COMPONENTS:

SIGNAL BUILDER BLOCK:

SIMULINK TO PS CONVERTER:

BATTERY BLOCK PARAMETERS:

RESISTOR BLOCK PARAMETERS:

SWITCH BLOCK PARAMETERS:

For switch we gave the threshold value 0.1179.
Lamp is connected to switch.
Input for switch is given from voltage sensor.
It means above the threshold value the lamp is ON and Below the threshold value lamp is in OFF state.

LAMP BLOCK:

We are using lamp in place of fan and lamp parameters are given in the block.

OUTPUT GRAPH:

Shows the turn on and turn off characteristics of lamp for different temperature conditions.

Ship work like this
in your own course.