How to Inspect Short Circuit of PCB Board ? If it is manual welding, we should develop good habits Before welding, the PCB board shall be inspected visually and the key circuits (especially power supply and ground) shall be checked for short circuit with multimeter. After welding a chip, use a multimeter to test whether …
How to Inspect Short Circuit of PCB Board and Judge it? Read More »
Before Cleaning All connectors on the circuit board including jumper plug, card board, battery and IC must be carefully pulled out before cleaning. Potentiometer, transformer and solenoid coil (inductive coil) must also be removed from the circuit board. Note: non electronic professional do not do this operation, because if there is no electronic professional technology, …
Fault Characteristics and Maintenance of PCB Capacitor Damage The fault caused by capacitor damage is the highest in electronic equipment, especially the damage of electrolytic capacitor is the most common. The damage of capacitance is shown as follows: the capacity becomes smaller, total loss of capacity, electric leakage and short circuit. Capacitors play different roles …
We will discuss the contents of “grounding” in PCB layout of boost DC / DC converter. It is often heard that “grounding is very important” and “grounding design needs to be strengthened”. In fact, in the PCB layout of boost DC / DC converter, the grounding design which does not fully consider the grounding and …
Because most of the modern printed circuit boards have no official schematic and more and more chip applications with programs, engineers will face challenges in various aspects. Through a lot of practice, there are still ways to avoid these challenges. I will share 6 maintenance methods of PCB. Tip 1: Appearance Inspection Looking, asking, smelling …
As an engineer, we often come across problems when we layout and route circuit board. According the experience, we summary some skills about the PCB layout and routing. Before PCB layout and routing, the layout of the components in the entire board needs to be set.The shape and size of the board must be determined …
In PCB production process, drilling is very important. The so-called drilling is to drill the required through holes on the copper clad laminate to provide electrical connection and fix devices. If there is a problem in the via process, the device can’t be fixed on the circuit board, which will affect the use or the …
In PCB design, layout is an important part. The quality of the PCB layout result will directly affect the effect of the wiring, so it can be considered that a reasonable layout is the first step to a successful PCB design. There are two layout methods, one is interactive layout, and the other is automatic …
The Schematic Design Schematic design is preparatory work. For a simple board, if you are with skilled process, you can skip it. But for beginners, you must follow the process. On one hand, you can develop good habits, on the other hand we can avoid mistake by this way for complex circuits. When drawing the …
PCB Layout & Routing by Altium Designer: How to Process Read More »
1. Cut Cutting is the process of cutting the original CCL into boards that can be made on the production line First, let’s look at some concepts Unit: unit refers to the unit graphics designed by PCB design engineers. Set: set refers to a graph that engineers put together multiple units to improve production efficiency …
PCB Manufacturing Process: Teach You Step by Step Read More »
