digital systems physics

Question

Draw a block diagram of a domestic central heating system which has the following elements: A thermostat which has a dial which is set to the required temperature and has an input of the actual temperature in the house and which operates as a switch and gives an output electrical signal which is either on or off.

Answer 1

You can think of a central system as follows Zaynab;

Briefly;

1. Thermostat's dial sets the desired temperature and compares the set temperature with the actual temperature in the house.

2. If the actual temperature is lower than the set temperature, the thermostat activates an electrical switch.

3. The switch turns ON the central heating system.

4. The central heating system generates heat and distributes it throughout the house.

5.. The house warms up until the actual temperature matches the set temperature.

6.. The thermostat turns OFF the switch, deactivating the heating system.

7.. The process repeats whenever the actual temperature falls below the set temperature, maintaining the desired temperature in the house.

I hope this helps.