It's been done already. The biggest problem with making it a marketable venture is limitations on battery life.
1978 Nintendo begins making coin-operated video games. In addition, they begin selling coin-operated video games using microcomputers as well.
Generation.
A switch is a device for closing or opening (making or breaking) an electric circuit. A switch can be manually operated,electrically operated or electronically operated. -By Sumant dev (Aeronautical engineer,devsumant@gmail.com)
One cost of buying a battery-operated CD player is the ongoing expense of purchasing and replacing batteries, which can add up over time. However, a benefit is the portability and convenience of being able to listen to CDs without needing access to a power outlet, making it suitable for on-the-go use or in areas without electricity.
A ½-inch Air-Operated Double-Diaphragm (AODD) pump is a highly efficient and versatile pneumatic diaphragm pump designed for handling various fluids, including corrosive chemicals, viscous liquids, and slurries. It operates using compressed air, eliminating the need for electricity, making it suitable for hazardous environments.
for making electricity
making electricity
Sending stream to buildings in Manhattan for Heat/ hot water and air conditioning systems such as central heating where brine is used and also used for making electricity through a steam operated turbine
He discovered electromagnetic induction,diamagnetism and the laws of electrolysis, which is the basis for both making electricity and driving a motor with electricity. He also built a dynamo for making electricity.
Dynamo
To store or produce electricity.
conclusion of electric current