Tongsudeshuo that the principle of electromagnetic induction produced by the high-power electrical products, such as motors, compressors, relays, fluorescent lamps, and so on. Commencement of such products in need than the current required to maintain normal operation of much larger (about 3-7 times) the start-up current. For example, a normal operation when the power consumption of about 150 watts of refrigerators, launched its power can be as high as more than 1,000 watts. In addition, because the emotional load connected to the power or disconnect the power of the moment, be counter-EMF voltage, which is far greater than the peak voltage RONZ power inverter can bear the voltage value, it is easy to cause RONZ power inverter The instantaneous overloading, the impact of RONZ power inverter life. Therefore, this type of electrical power supply to the wave higher.