One action that electromagnetic wok often encounters is to throw the wok. Every time the pot is thrown, it actually gives the IGBT module a huge impact, because every time the bottom of the pot leaves the microcrystalline pot, the inductance will change greatly instantly, and the power will also change greatly, which is equivalent to an emergency brake when driving, which has a great impact on the car. If IGBT module can't carry it, it will fail easily. Now many commercial induction cooker manufacturers are deeply aware of the importance of this point, so they all say that it is an imported module, but when it is disassembled, it is not an imported module at all. In fact, there are only two ways to test whether the module is imported. First, this company has been producing commercial induction cooker for a long time and has a good reputation; Second, disassemble the machine for inspection. Otherwise, no matter how good it is, it is not necessarily an imported module. There is a simple reason. As Ma Yun said, it's not that there are too many fakes, but that you are too greedy. The price of single-head and single-tail electromagnetic cooking stove is less than 10 thousand, so it can't afford to use imported modules You have to find a cheap assembly manufacturer to provide imported modules. He can only verbally guarantee that it is an imported Infineon module, and he can't do anything else because he can't let himself lose money in business.