The composition of the notebook power adapter

GiantPCTechnology is a professional power adapter manufacturer. Today, I will analyze how the notebook power adapter is composed:

Switching transformer, one of the core components of switching power supply. Second, the inductor coil (also known as choke coil), the main function is to reduce electromagnetic interference.

Operational amplifier IC (integrated circuit), an important part of protection circuit and voltage regulation. Fourth, the rectifier bridge, the specification is D3SB, the function is to change the 220V alternating current into direct current. Fifth, the fuse, the specification is 2.5A/250V, when the current in the circuit is too large, the fuse will blow to protect other components.

Fourth, the rectifier bridge, the specification is D3SB, the function is to change the 220V alternating current into direct current.

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

Filter capacitor, the specification is 180μF/400V, the function is to filter out the AC ripple in the DC power and make the circuit work more reliable. Eight, varistor, its function is that when the external voltage is too high, the resistance of the varistor quickly becomes very small, and the fuse connected in series with the varistor is blown, thereby protecting other circuits from being burned out. Nine, the secondary rectifier, the function is to convert low-voltage alternating current into low-voltage direct current. In IBM's power adapter, the rectifier tube is often made of two high-power parallel work to obtain a larger current output.

There are two secondary filter capacitors with a specification of 820μF/ 25V, which play the role of filtering out the ripple in the low-voltage direct current.

The temperature probe is used to detect the internal temperature of the power adapter. When the temperature is higher than a certain set value (different brands of power adapters have slightly different temperature thresholds), the protection circuit will cut off the power of the adapter. voltage output, thus protecting the adapter from damage. Of course, in addition to the above components, there are also adjustable potentiometers and other resistance-capacitance components on the circuit board. The above is all the content shared today. For more exciting content, please click on the real-time official website to check.