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What are the important components of the power adapter?

source:power adapter     Popular:adapter     release time:2021-06-29 09:55:06     Article author:sznbone    

  The power adapter is a small power exchange device, which is composed of a housing power transformer and a rectifier circuit. It is also widely used and can be used in mobile phones, electric vehicles and other tools. What are the important components of the power adapter? Let's follow the editor to understand it!

What are the important components of the power adapter?(图1)

  1. The high-power switch tube of the power adapter is one of the core components in the switching power supply. The switching power supply can work "one on and one off".

  2. The power adapter fuse standard is 2.5A/250V. When the current in the circuit is too large, the fuse will blow to maintain other components to protect the safety of electricity.

  3. The secondary filter capacitor plays a role in filtering out ripples in low-voltage direct current.

  4. The function of the filter capacitor is to filter out the AC ripple in the DC power and the circuit is more reliable.

  5. Varistor, the function is that when the external voltage is too high, the resistance of the varistor quickly becomes very small. The fuse in series with the varistor is blown to protect other circuits from burning out.

  6. The main function of the inductance coil is to reduce electromagnetic interference.

  7. PWMIC (Integrated Circuit) is an important part of driving switch tube and voltage regulation.

  8. The function of the secondary rectifier tube converts low-voltage alternating current into low-voltage direct current.

  9. The temperature probe is used to explore the internal temperature of the power adapter. When the temperature is higher than a certain set value, the maintenance circuit will block the voltage output of the adapter and then maintain the adapter from damage.


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