A noise generator produces electrical signals in both audio and video format. These are used for troubleshooting purposes in signal circuits for amplifiers and televisions.

A Generator is electrical machine which produces electrical current and voltage..

An electrical generator generates electrical energy. It takes some kind of mechanical energy to turn the generator. The generator is said to convert mechanical energy into electrical energy.

It is better if you could use an electrical supply. The noise of the generator, interruption of power when the generator stops from lack of fuel and unstable voltages from loads being picked up and dropped are some of the drawbacks of using a generator.

A generator changes mechanical energy into electrical energy.