Difference between DC power supply and AC power supply

There are many types of DC power supply. Different types of dc power supply have different properties of non-static power and different energy conversion processes. In chemical cells (such as batteries, batteries, etc.), nonelectrostatic forces are related to ion dissolution and deposition processes, chemical energy is converted to electrical energy and joule heat when a chemical cell discharges, and nonelectrostatic forces are related to diffused temperature differences and electron concentration differences. When the power supply supplies power to the external circuit, the heat portion is converted to electricity. In a DC generator, the nonstatic force is the effect of electromagnetic induction. When powered by a DC generator, mechanical energy is converted into electrical energy and joule heat. In a photocell, the nonstatic force is a function of the photovoltaic effect. When powered by a photocell, the light energy is converted into electricity and joule heat.