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Can the power adapter be used with high current?

source:Industry News     Popular:adapter     release time:2022-02-26 09:13:03     Article author:sznbone    

  Can the power adapter be used with high current?(图1)

  1. The input current of the newly purchased power adapter is larger than the original one, can it be used?

  Notebook power adapter, the original input current is 1.5A, the newly purchased input current is 2.4A, other parameters are the same, does this have any effect?

  works, no problem. For power supplies, generally speaking, when the output voltage is the same, the one with a large output current can replace the one with a small output current, while the one with a small output current cannot replace the one with a large output current. This is because, after replacing the power supply with a larger output current, the load of the power supply becomes smaller, the heat generation of the power supply will be reduced, and the reliability will be improved; and if the power supply of the original design specification is replaced with a smaller current, Then the load of this power supply will be higher than the original, the heat generation will increase, and the reliability will be reduced.

  It can be used, because the power that your laptop can drag determines the power consumption of the power supply. Even if you use a 2.4A power supply, your laptop can only work with a current of 1.5A, and the remaining current can be retained. In the power supply, this has a better guarantee for the life of the power supply!,

  2. Can the power adapter be used with different input currents and the same output?

  The power adapter itself has different input currents and the same output voltage, so it can be used. The power adapter itself, the input current is different, can only explain the size of the power. It is OK if the output voltage and current are the same respectively!

  If your original adapter is the original one from the manufacturer, then the voltage is the same, the one with the larger current can be replaced with the smaller one, and vice versa.

  3. When using the power adapter to charge, sometimes we will encounter the phenomenon of sudden sparks when the power is turned on. Or there is a "sizzling" sound on the power strip. Do you know what this is? This phenomenon is called a surge.

  What is a surge? It is a transient overvoltage that exceeds the normal operating voltage. It is called transient pulse voltage, transient overcurrent, surge or surge, etc. It is a short-term current and voltage fluctuation that appears in the circuit. Severe pulses in the circuit usually last about one millionth of a second.

  Electric surge is harmful to equipment, and the hazards of electric surge can be mainly divided into two types:

  1. Catastrophic hazard, when the surge voltage exceeds the equipment's capacity, the equipment may be damaged or even cause safety hazards.

  2. Cumulative hazards, multiple small bands use the cumulative effect to cause the decline of equipment and device performance, the occurrence of official seals and the shortening of service life of the equipment, and finally cause the suspension of work or the reduction of work efficiency.

  When you use the power adapter to charge electronic products, do you plug in the device first, or plug in the power first, if you plug in the device first, then a large voltage pulse may be generated at the moment of power-on, which will cause a surge . Excessive power surges may threaten the safety of electronic equipment, so it is better for us to plug in the power before charging the equipment.


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