Week -2

1. Working Of A Electric Doorbell:-

>Electric bell is based on the principle of electromagnets. When switch is pressed, electromagnet is activated and the hammer moves and hits the gong. As the hammer moves, circuit breaks and the electromagnet is disabled. This causes the hammer to go back to initial position due to the spring and the circuit completes again. This process is continuously repeated giving the ringing sound of the bell.

Blocks used from Simulink and Simscape:-

>A pulse generator is used in which 2s time is set and rest of the parameters are assumed as mentioned. it;s connected with simulink-ps converter and a scope.

>The electrical circuit have a electrical resistance and a battery, a switch and a resistor from solenoid.

>The mechanical subsystem consists of ideal translation motion sensor and a mechnical transitional reference, a solver is also connected to solve both subsytems properly.

>The whole sysytem connects with ps-simulink converter and it goes to connect with display and a scope.

2. Working Of a Thermistor:-

>The term thermistor is acombination of a two word term known as "Thermal Resistor", as the name suggests a thermistor is a resistor whose electrical resistance varries with the temprature.

Blocks Used:-

>A signal Builder is used to insert the signals, as the temprtaure varries with time, it's connected with simulink-ps conveter and a scope.

>An ideal thermal temprature source is taken and athermal resistance is connected to it.

>Than the thermistor, battery, resistor, voltage sensor and a electrical reference completes the electic circuit.

>A solver is used as thermal and electrical, both the blocks are used which goes on to connect with a ps-simulink convereter, a scope and display.