To calculate the change in temperature, subtract the initial temperature from the final temperature. Example: 84.2 degree Fahrenheit - 41 degrees Fahrenheit = 43.2 degrees Fahrenheit. The temperature from morning to afternoon changed by 43.2 degrees Fahrenheit.
It needs 12 volts so it will be the standard modern power supply provides 12 volts of power.
Power Transformer is an electrical device that converts inbound electricity to a higher or lower value of voltage for specific purposes. It is a major component in power grid to supply voltage in many nations. It consists of a coil system in the device that manages the current flow within a specific range.