1, according to the positive and negative poles aligned access can be. Power filter is a filter circuit composed of capacitors, inductors and resistors, also known as "power EMI filter", or "EMI power filter", a passive bi-directional network, one end of which is the power supply, the other end is the load.
2. In general, ACC means that before the car is started, if there is a key ACC gear, as long as the key is dialed to this position, some of the devices that do not use a lot of electricity.
3, as a way to attenuate the **** mode current, to achieve the purpose of filtering. Y capacitance is respectively across the power line between the two lines and ground (L-E, N-E) capacitance, generally appear in pairs, such as the figure Y1 and Y2, based on the limitations of the leakage current, the value of the Y capacitance can not be too large, is generally nF level, the Y capacitance inhibit **** mode interference.
4, the filter I / O line separation, not parallel processing or cross-talk. The wiring of the filter is: keyed L connected to N connected to 2. output L connected to N connected to 4. grounding wire grounding device on it.