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AC Voltage Of The AC DC Power Adapter

General power nominal voltage, refers to the open circuit output voltage, that is, outside the load is not connected, there is no current output voltage, it can also be understood that this voltage is the upper limit of the power output voltage. For the use of active power within the active components of the case, even if the mains voltage fluctuates, the output is constant, as the market generally small transformers, such as portable with the type of power supply, if the electricity fluctuations, The output of the power supply will fluctuate.AC DC Power Adapter

Generally speaking, the true no-load voltage of the ordinary power adapter is not necessarily the same as the nominal voltage, because the characteristics of electronic components can not be completely consistent, so there is a certain error, the smaller the error, the higher the consistency of electronic components , The cost of production is high, so the price is more expensive. In addition, the nominal current value, regardless of any power supply has a certain internal resistance, so when the power output current, the internal pressure drop will occur, resulting in two things, one is to generate heat, so the power will be hot, and the other One is to cause the output voltage to drop, which is equivalent to the internal consumption. In the case of AC DC Power Adapter

Power supply voltage, the output current is different, can not be used in the same books. The basic principle is that the large nominal current supply can replace the small nominal current supply. It is estimated that some people would like to think that a large nominal current power will burn books, because the current big thing. Power supply to the books and the battery power supply to the books is different. Battery-powered, the battery output is pure DC, very clean, the battery voltage is neither possible nor need to design a high, lithium battery chemical properties determine the output voltage of a cell can only be about 3.6V.AC DC Power Adapter

The part of the power supply to the books when the same power supply to the battery, and the part of the battery charge through the battery charge control circuit can be added to the battery, the control circuit can be very complex, so the power supply voltage must be greater than the battery voltage Have sufficient capacity to supply the unit to the charge control circuit. Finally the voltage actually added to the cell will never be the nominal voltage of your power supply. Rest assured.AC DC Power Adapter


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