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Teach you to get PCB done in one go
ByGrace December 3, 2024December 2, 2024
Today’s switching regulators and power supplies are more sophisticated and powerful, but one of the challenges they face is that the ever-increasing switching frequencies make PCB design more difficult. PCB layout is becoming a watershed that distinguishes a good switching power supply design from a bad one. This article will provide suggestions on how to…
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PCB circuit board tester function and application characteristics
ByGrace December 2, 2024November 29, 2024
1.Main functions of PCB circuit board tester The tester adopts circuit online testing technology, which can be used to test and analyze common faults of various small and medium-scale integrated circuit chips online or offline, and test the V/I characteristics of analog and digital devices. •Node voltage test Since the test object of the tester…
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Aluminum substrate PCB production specifications and design rules
ByGrace December 2, 2024November 29, 2024
The main technical requirements are: Size requirements, including board size and deviation, thickness and deviation, verticality and warpage; appearance, including requirements for cracks, scratches, burrs and delamination, aluminum oxide film, etc.; performance, including peel strength, surface resistivity, minimum breakdown voltage, dielectric constant, flammability and thermal resistance. Special testing methods for aluminum-based copper-clad laminates: First, the…
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Design a perfect PCB, pay attention to these details
ByGrace December 2, 2024November 29, 2024
Layout 10 rules for component layout: Wiring (1) Wiring priority Key signal line priority: key signals such as analog small signals, high-speed signals, clock signals and synchronization signals should be routed first Density priority principle: start routing from the device with the most complex connection relationship on the single board. Start routing from the area…
Read More Design a perfect PCB, pay attention to these details
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PCB double board wiring principles
ByGrace November 30, 2024November 27, 2024
PCB board is an important electronic component, and it is the mother body of all electronic components. It has become more and more complex since the beginning of last century. From single layer to double layer, four layers, and multiple layers, the design is also difficult. Increasing. Because both sides of the double-layer board have…
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Hole metallization of FPC and copper foil surface cleaning process
ByGrace November 30, 2024November 28, 2024
The hole metallization of the flexible printed board is substantially the same as the hole metal process of the rigid printed board. In recent years, there has been a substitution electroless plating process using a direct electroplating process that forms a carbon conductive layer technology. Hole metallization of flexible printed boards has also introduced this…
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Improvement method of hole/permeation problem when using PCB dry
ByGrace November 30, 2024November 27, 2024
Dry film masking holes appear broken Many customers believe that after the occurrence of broken holes, the film temperature and pressure should be increased to enhance the bonding force. In fact, this view is incorrect. Because the temperature and pressure are too high, the solvent of the resist is excessively volatilized and dried. The film…
Read More Improvement method of hole/permeation problem when using PCB dry
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Why should the PCB board “paste gold”
ByGrace November 30, 2024November 27, 2024
1 PCB board surface treatment Anti-oxidation, spray tin, lead-free spray tin, immersion gold, Shen tin, Shen silver, hard gold plating, the whole board gold-plated, Goldfinger, nickel palladium Gold OSP: the cost of the end, good solderability, storage conditions harsh, time Short, environmentally friendly technology, welding is good, smooth. Spray tin: spray tin plate is generally…
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The influence and requirements of different manufacturing processes on the pads on the PCB
ByGrace November 29, 2024November 27, 2024
1. The test points must be added to the components of the chip components that are not connected to the plug-in components. The diameter of the test points is between 1.0mm and 1.5mm, which is convenient for online tester testing. The edge of the test pad is at least 0.4 mm from the edge of…
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The difference and advantages and disadvantages of gold plating and immersion gold process
ByGrace November 29, 2024November 26, 2024
(1) Why use gold-plated plates? As ICs become more integrated, the IC pins are more dense. The vertical tin-spraying process is difficult to flatten the fine pads, which makes the placement of the SMT difficult; in addition, the shelf life of the tin-plate is very short. The gold-plated plate solves these problems: 1 For the…
Read More The difference and advantages and disadvantages of gold plating and immersion gold process
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Detailed IC chip EMI design impact
ByGrace November 29, 2024November 27, 2024
Electromagnetic compatibility design often uses various control techniques. In general, the closer to the EMI source, the lower the cost of implementing EM control. Integrated circuit chips on PCBs are the primary source of energy for EMI, thereby simplifying EMI control in PCBs and system-level designs with a deep understanding of the internal features of…
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In embedded, is there any difference between operating system and device driver?
ByGrace November 29, 2024November 27, 2024
First, the role of driving The operation of any computer system is the result of collaboration between hardware and software in the system. Software without hardware is a paragon, while hardware without software is just a pile of scrap metal. Hardware is the underlying foundations, a platform where all software can run, and the code…
Read More In embedded, is there any difference between operating system and device driver?
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What is a printed circuit board? What are the functions of a printed circuit board?
ByGrace November 29, 2024November 26, 2024
Printed circuit boards (PCBs) are convenient thin sheets used to house interconnected electrical components in a simple, convenient and economical manner. They are used as a physical support for mounting and connecting different electrical components. PCBs are made of fiberglass, composite epoxy or any other composite material with a metal coated surface. They have an…
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Why can’t I touch the board with my hand?
ByGrace November 28, 2024November 25, 2024
It is a common knowledge of electronics engineers that human hands cannot directly touch or touch a circuit board. Why? First, the harm of static electricity In different environments, the electrostatic voltage carried by the human body ranges from a few hundred volts to several tens of thousands of volts. Contact with electronic components (conductors)…
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Precautions for correcting FPC film deformation related methods
ByGrace November 28, 2024November 25, 2024
1, the splicing method: Applicable: the film with less dense lines and inconsistent deformation of the film layers; it is especially suitable for the deformation of the solder mask and multilayer power supply ground film; Not applicable: negative film with high wire density, line width and spacing less than 0.2mm; Note: When cutting, try to…
Read More Precautions for correcting FPC film deformation related methods

additive pcb

Teach you to get PCB done in one go

PCB circuit board tester function and application characteristics

Aluminum substrate PCB production specifications and design rules

Design a perfect PCB, pay attention to these details

PCB double board wiring principles

Hole metallization of FPC and copper foil surface cleaning process

Improvement method of hole/permeation problem when using PCB dry

Why should the PCB board “paste gold”

The influence and requirements of different manufacturing processes on the pads on the PCB

The difference and advantages and disadvantages of gold plating and immersion gold process

Detailed IC chip EMI design impact

In embedded, is there any difference between operating system and device driver?

What is a printed circuit board? What are the functions of a printed circuit board?

Why can’t I touch the board with my hand?

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