IntroductionFor electronic products, printed circuit board design is a necessary part in electrical schematic diagram design procedure. The rationality of design is closely related to the production and the quality of the products. For many people who have just engaged in electronic design, they might have problems in the PCB design due to their lack of experience, although they have indeed&n...

Ⅰ.Basic Rules for Selecting Electronic ComponentsA simple guide to electronic components.a、Universal Rule  We need to choose widely-used components to reduce the development risks.b、High Cost Effective Rule  It is necessary to select electronic components with lower price to reduce cost when they have the similar performance and utilization .  　　c、Purchasing Rule  The component...

Packaging means that the circuit pins on the silicon chip are wired to the external connectors for connection with other devices, or it refers to the housing used to install semiconductor integrated circuit chips. It not only plays the role of mounting, fixing, sealing, protecting the chip and enhancing the electrothermal performance, but also is connected to the pins of the shell of package by wi...

1. What is BJT TransistorBJT transistors are three-terminal active devices made of two PN junctions, which are interacted with each other and fabricated on single crystals of semiconductor germanium or silicon to form a PNP (or NPN) structure. The N-type region in the middle is known as the Base (B), and the P-type regions on both sides are known as the Emitter (E) and the Collector (C), each of w...

MOSFETs are widely used in switching power supplies due to their low internal resistance and fast switching speed. The MOSFET often selects a appropriate driver circuit based on the parameters of the power-supply IC and MOSFET. Let's discuss the drive circuits of MOSFETs for switching power supplies.When using a MOSFET to design a switching power supply, most people will consider the parameter...