Week -2

1. Electric doorbell is a souding device base on electromagnetic principal. In electric doorbell it get trigerred the sound when electrical circuit get completed. While doing simulation i required pulse genarator with delay of 2 sec, PS switch ,battery for power supply,solanoid to work as a electromagnet when current get pass through it. Ideal translation motion sensor to get velocity and position. the results are mention in attached files.

2.Here the aim is to sence the temperature by using thermistor and if the temperature get above 25 degree the switch ON the fan otherwise it get switch off. To genarate the proper result i have use signal genarater block using a given time and temperature range. This signal is being given to the thermistor using controlled temperature source. here voltage sesor measure the temprature accross the resistor and gives this voltage signal to switch. In switch treshold value get set according to the threshold temperature condition and switch get on and off signal to fan acooding to that.