Lisa's Column

Teach you how to identify the true and false chips

Teach you how to identify the true and false chips

Some time ago, someone told us that debugging a circuit is a life-and-death situation, and suspected that a fake chip was bought. Today we will sha...

What are the precautions for a good SMT chip processing factory ?

What are the precautions for a good SMT chip processing factory ?

With the development of science and technology, many electronic products are developing in the direction of small and precise, making the size of m...

How to eliminate electromagnetic interference in PCB design?

How to eliminate electromagnetic interference in PCB design?

Anti-interference problem is a very important link in modern PCB design, it directly reflects the performance and reliability of the whole system. ...

How to reduce surface tension and viscosity in PCBA soldering process?

How to reduce surface tension and viscosity in PCBA soldering process?

Viscosity and surface tension are important properties of PCB A solder, and good PCBA solder should have low viscosity and surface tension when me...

How to Improve the Thermal Reliability of PCB Circuit Boards

How to Improve the Thermal Reliability of PCB Circuit Boards

In general, the distribution of copper foil on a pcb circuit board is very complex and difficult to model accurately. Therefore, it is necessary to...

How to Improve the Thermal Reliability of PCB Circuit Boards

How to Improve the Thermal Reliability of PCB Circuit Boards

In general, the distribution of copper foil on a pcb circuit board is very complex and difficult to model accurately. Therefore, it is necessary to...

[Altium Designer] PCB knowledge - copper pouring skills and settings

[Altium Designer] PCB knowledge - copper pouring skills and settings

What are the pcb copper cladding skills? What is the pcb copper cladding setting method? The main function of pcb copper cladding is "reflow and sh...

Comparison of STM8S105S4T6C and STM8S105C6T6

Comparison of STM8S105S4T6C and STM8S105C6T6

STM8S105S4T6, 44 pins, LQFP package (LQFP44 10X10), fewer pins than STM8S105C6T6, but bigger than it.   STM8S105C6T6, package LQFP48 (7*7), 48 pins...

The correct test method of ripple noise

The correct test method of ripple noise

  Accurately measuring power supply ripple is an art in itself. In the example shown in Figure 1, a junior engineer used an oscilloscope by mistake...

How does the Bluetooth module work?

How does the Bluetooth module work?

1. The working principle of the Bluetooth module Bluetooth devices use electromagnetic waves to connect mobile phones and computers. Bluetooth prod...

Features and advantages of power supply modules

Features and advantages of power supply modules

The power module is a power supply that can be directly mounted on the printed circuit board. Its characteristics are that it can be an application...

Rheostat vs potentiometer

Rheostat vs potentiometer

The potentiometer and rheostat are two components that are used in electronics. These two components are used for both laboratory and industrial pu...