Week -2
ANSWER:
Inputs are given to the Signal Builder and Connected with Temperature Controlled Source for maintaining the specified temperature difference across the source. Then input temperature flows through thermistor.
A doorbell is a signaling device typically placed near a door to a building's entrance. when a visitor presses a button the bell rings inside the bulding,alerting the occupanat to the presence of an electromagnet.electromagnets are coils of wire wrapped around a small piece of magnatic metal.
Blocks used in model:
- Repeating Sequence Stair
- Controlled Temperature Source
- Thermistor
- Resistor
- Voltage sensor Battery
- Switch
- Lamp
- Scope
- Dsiplay
- PS-Simulink Converter
- Simulink-PS Converter
- Solver Configuration
Battery and a resistor is connected in the thermistor circuit. A voltage sensor was given accross this resistor to measure the voltage change during different temperature inputs. The resistance of this resistor can be set to any value, but it should not be changed once the threshold voltage is found. The threshold temperature was given as 25 degree Celsius and the corresponding voltage over the resistor was found out, through a display connected to the voltage sensor. At this time the Repeating Sequence Stair was given only one value, i.e, 25 degree Celsius or 298 K. The output from the voltage was also given into a switch which is linked to a lamp which displays different colours based on the logical conditions. The lamp color was set to red if the temperature was below 298K and to green when the temperature is above 298K.