A power supply is a device that converts other forms of energy into electrical energy and supplies electrical energy to a circuit (electronic device). It provides the electrical energy needed by all the components in a computer. The size of power supply, current and voltage stability, will directly affect the performance and service life of the computer. Power equipment must pass professional testing, which mainly includes input voltage, ripple noise, output short circuit, over-power, conversion efficiency, power factor, response time, timing, noise, conduction radiation, leakage current, high and low temperature test.
Power products are widely used in industrial automation control, military equipment, scientific research equipment, industrial control equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating and other fields.