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2. Van de Graaff generator - Wikipedia

   en.wikipedia.org/wiki/Van_de_Graaff_generator

   Van de Graaff generator. A Van de Graaff generator is an electrostatic generator which uses a moving belt to accumulate electric charge on a hollow metal globe on the top of an insulated column, creating very high electric potentials. It produces very high voltage direct current (DC) electricity at low current levels.

3. Electrostatic generator - Wikipedia

   en.wikipedia.org/wiki/Electrostatic_generator

   12" Quadruple Sector-less Wimshurst Machine (Bonetti Machine) An electrostatic generator, or electrostatic machine, is an electrical generator that produces static electricity, or electricity at high voltage and low continuous current. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained ...

4. Solar updraft tower - Wikipedia

   en.wikipedia.org/wiki/Solar_updraft_tower

   The solar updraft tower (SUT) is a design concept for a renewable-energy power plant for generating electricity from low temperature solar heat. Sunshine heats the air beneath a very wide greenhouse-like roofed collector structure surrounding the central base of a very tall chimney tower. The resulting convection causes a hot air updraft in the ...

5. Nanogenerator - Wikipedia

   en.wikipedia.org/wiki/Nanogenerator

   Nanogenerator. A nanogenerator is a compact device that converts mechanical or thermal energy into electricity, serving to harvest energy for small, wireless autonomous devices. It uses ambient energy sources like solar, wind, thermal differentials, and kinetic energy. Nanogenerators can use ambient background energy in the environment, such as ...

6. Wimshurst machine - Wikipedia

   en.wikipedia.org/wiki/Wimshurst_machine

   The Wimshurst machine or Wimshurst influence machine is an electrostatic generator, a machine for generating high voltages developed between 1880 and 1883 by British inventor James Wimshurst (1832–1903). [citation needed] It has a distinctive appearance with two large contra-rotating discs mounted in a vertical plane, two crossed bars with ...

7. Excitation (magnetic) - Wikipedia

   en.wikipedia.org/wiki/Excitation_(magnetic)

   In electromagnetism, excitation is the process of generating a magnetic field by means of an electric current. An electric generator or electric motor consists of a rotor spinning in a magnetic field. The magnetic field may be produced by permanent magnets or by field coils. In the case of a machine with field coils, a current must flow in the ...