The internal structure of the power adapter

Once notebook computer is power off, you can not run normally, would use the Power Adapter, it has many benefits, so what are the power adapter internal structure? The YHY power adapter manufacturer in detail under for everyone.

1: varistor, its function is when the voltage is too high, pressure sensitive resistance value is small, quickly fuse by fusing with pressure sensitive resistance in series, so as to protect the rest of the circuit is not burn out.

2: the fuse, the specification is 2.5 A / 250 v, when the current in the circuit is too large, the fuse will fuse to protect other components.

3: the inductance coil (also called choke coil), the main function is to reduce electromagnetic interference.

4: rectifier bridge, the specification for D3SB, action is the 220 v alternating current into direct current.

5: filter capacitance, the specification is 180 uf / 400 v, is used to filter the ac ripple in the direct current (dc), make the circuit work more reliable.

6: op-amp IC (integrated circuit), protection circuit, an important component of the voltage regulation.

7: temperature sensors, to detect the internal temperature of the power adapter, when the temperature is higher than a certain value (different brand power adapter, the setting of slightly different temperature threshold), the output voltage of the protection circuit will be cut off the adapter, which protect the power adapter and laptop parts from damage;

8: high power switch tube, is one of the core components of switch power supply, switching power supply can be "one on one off", switch tube.

9: switch transformer, switch power supply one of the key components, main effect is the function of the transformer. The function of secondary rectifier is laid low voltage dc low voltage alternating current (ac) in IBM's power adapter, rectifier is often made up of two high power rectifier of parallel operation, in order to obtain larger output current.

10: secondary rectifier tube, the function is laid low voltage dc low voltage alternating current (ac). In IBM's power adapter, high-power rectifier is often made up of two parallel operation, in order to obtain larger output current.

11: the secondary filter capacitance, specifications for 820 uf / 25 v, a total of two, the ripple effect in low voltage direct current (dc). In addition to the above components, circuit boards and adjustable potentiometer and other rc components.