*A machine that converts one form of energy into another, especially mechanical energy into electrical energy, as a dynamo (or) electrical energy into sound.

​

• Signal generator, electronic devices that generate repeating or non-repeating electronic signals

• Electric generator, a device that converts mechanical energy to electrical energy

• Generator (circuit theory), an element in an abstract circuit providing a source of electricity

• Engine-generator, an electric generator with its own engine

• Wearable generator, a hypothetical generator that can be worn on the human body

• Gas generator a device, often similar to a solid rocket or a liquid rocket that burns to produce large volumes of relatively cool gas.

• Motor–generator, a device for converting electrical power to another form