How many kinds of perpetual motion machines are there?

Perpetual machine is divided into mechanical type: it tries to obtain starting energy by internal circulation of machinery, and tries to break through the conservation of energy. And according to the energy gain, the obtained energy is output, and the output energy is divided into two parts, one of which provides power for the machinery. The other part does external work. Electricity/magnetic motive: It belongs to the perpetual motion machine category, but it is called a toy because it has no industrial practicability. Concept, hypothetical concept, the interaction between magnet and electromagnetic field makes energy break through the conservation of energy, and the output obtained by magnetomotive is greater than the input. But in fact, experiments show that the magnetic motion will eventually stop because of degaussing. Thermal cycle: trying to break through thermal I and thermal II, but ultimately failing, the temperature balance point and temperature cannot be superimposed and converted, and 100% conversion cannot be carried out in the internal environment. Air compressor: rely on compressed air to raise the temperature. Theoretically, air compression and energy release are conserved, but the mechanism using air compression involves the energy consumption of mechanical parts such as crankshaft. There are many imperfections in the speed of heat evaporation and the return of air temperature, but because of limited resources, the specific information is temporarily unknown (theoretically feasible perpetual motion machine).

Tesla coil: It is official information. People say it is not complete, but it does exist in theory and reality. It is an instrument for collecting electric energy in nature. Not to mention the official documents, but the coil made of natural electromagnetic field energy can only be a toy. Geometric perpetual motion machine: this is a perpetual motion machine that integrates all mechanical theories, broadens innovation and realizes an unprecedented and possibly unsuccessful perpetual motion machine. The inventor of this perpetual motion machine only studied the gain part, but gave up the fixed energy and chose the energy freely. An alternative combination is formed, which uses the torque difference between a circle and a triangle with equal circumference and ignores the shortest torque of the triangle. Liquid perpetual motion machine: a perpetual motion machine designed by combining the density of liquid mass with gravity or another simple gravity of water and gas. However, due to conservation, the use of liquid has failed so far, and the water type and gas type seem to have failed.