What is the function of Y capacitor in the charger?

by:MOSO     2020-03-17
In case of faulty charger will appear when charger in cause spontaneous combustion, cell phones, or even get an electric shock when charging, cause personnel injury. All this electronic components from the charger for quality problem. Mobile charger y capacitor used in common mode filter, it is between L to the ground or N to the ground, filter L to ground or N of common mode signal, y capacitor used usually symmetric, there are mainly the bypass; Decoupling; Filtering; Energy storage. In primary side into force a capacitor voltage 400 v, it is the primary filter capacitor, filter out noise, mains rectification after the circuit can get a more stable dc sine wave, behind only the less clutter, the stability of the circuit can better work, as for capacitance selected 400 v voltage value, switching circuit after work, it will have more than 300 v voltage on both ends of the capacitor, coupled with the current instantaneous peak voltage, so if the pressure value is too small, will shadow the capacitance critical crack, depending on the size of the output voltage and output capacitance to choose suitable pressure value, if 5 v voltage value is 10 v, the capacitance is also a filter function, make the charger output stable dc, as for the size of the capacity, pressure in front of the large capacity generally choose 47 ~ 470 uf, general 100 ~ 1000 uf output capacitance, capacity is big, in principle, but in fact, the greater the leakage current capacity, the greater the y capacitor dc ac resistance. So we should choose good quality when charging the mobile phone charger. And y capacitor quality directly the quality of the charger. As y capacitor in the mobile phone charger, it is important to quality assurance, y capacitance of choose and buy when the choice must have a safety inspection agencies certification and safety certification of industrial nations, on the general product certification mark. Phone charger capacitance y, y capacitor, jec y capacitance, mobile phone charger y y capacitor capacitance for common mode filter, in principle is the bigger the capacity, the better. But in fact, the greater the leakage current capacity, the greater the capacitance y ac dc resistance. So we should choose good quality when charging the mobile phone charger, and y capacitor quality directly the quality of the charger. More information of the charger, please focus on the charger manufacturers, shenzhen moso technology co. , LTD. ! ( The above information sorting from the network)
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