Power Supply Methods of Space Vehicles

In space, many methods are available to supply devices with necessary energy to function. Usually, no extrinsical source is required to power a device. The methods are as follows: [1] A P.E.S. system with a voltage to frequency converter. The device would receive the transmitted frequency and convert it back to a power source. [2] Wired energy source [3] Radiation converted from space to the proper frequency to power the device. [4] An extrinsical energy supply source that would convert numerous substances, light, and energies into a power source.