esd grounding

ESD is the release of static electricity, which can cause various damage to precision semiconductor chips, such as penetrating the thin insulating layer inside the component, and damaging MOSFET and the gate of CMOS element; The trigger is locked in the CMOS device, causing a short circuit of the PN junction of the reverse offset and forward offset, and melting the welding wire or the aluminum wire inside the active device. In the computer industry,

CabinetBothGroundingIt must be insulated from the earth There is no conflict between grounding and insulation. The earth refers to the electrical grounding professionally mentioned. the grounding of the computer room is also grounded. It is impossible to achieve absolute insulation because the earth is a conductor, but it is necessary to ensure that the distance

Static electricity is a kind of natural phenomenon that people are very familiar with. Many of the functions of electrostatic have been applied to military or civilian products, such as electrostatic precipitator, electrostatic spraying, electrostatic separation, electrostatic copying and so on. However, electrostatic discharge ESD (electro-static discharge) has become a hazard to electronic products and equipment, resulting in the malfunction of elec

Nowadays, switching power supply has replaced linear regulated power supply and is active in the electronic power design field. People gradually realized that the switch power supply has changed the technical direction of the electronic design industry. In the power supply design, safety is always the first priority. In the switch power supply, grounding can protect the user's personal safety and ensure the normal operation of power equipment, so what

In the grounding system, grounding wire production and installation is very important, the following for this introduction. One, grounding resistance requirements: 1, resistance to less than 4 Ω. The size of the grounding resistor can define the size of the grounding c

Integrated Wiring Grounding SystemPay attention to the following issues during design: 1. When the Integrated Wiring System adopts shielding measures, the continuity of all shielding layers should be maintained and the relative positions between wires should be kept unchanged. The FD or BD end of the shield layer shall be grounded, and the user terminal equipment shall be directly grounded according to the specific situation. The

The ISO image file was used to install the system, but during the Windows 10 upgrade, it is not always necessary to provide an ISO image download, only an ESD image file is left in the temporary directory of the hard disk. An ESD file can be used to implement a rollback of the system version, but it is not directly intended to install the system. It is imperative that you fully understand the

~ 1. Digital, analog, and power supply on the Board: From this figure, we can see that the analog and digital locations are completely separated, and finally each point is connected to the power source, which can prevent the mutual Crosstalk of the ground signal from affecting some sensitive components, as we all know, digital components have a higher Interference tolerance than analog components, while the noise on the digital ground is generally large, so separating them can reduce

In the ESD format, Microsoft began using a new system image file compression format in Windows8, a higher compression rate than WIM, but currently only DISM supports the processing of ESD files. In addition, most of the ESD files are encrypted and DISM cannot be processed directly. So the best way to do this is to decrypt the

Installation of the original system is very easy to encounter some trouble problems, such as WIN8 flagship system installation of ESD format file prompts "Windows source is invalid", the ESD file format compression rate is high, small size, we download the WIN8 system is such a format, So WIN8 system installation of ESD format file often prompts "Windows source i

1. When the integrated wiring system adopts shielding measures, all shielding layers should be kept continuous, and the relative position between conductors should be ensured. Shielding layer of wiring equipment (FD or BD) end should be grounded, the user (terminal equipment), depending on the specific situation directly, both ends of the grounding: should try to connect to the same grounding body. When the

Bav99/ESD Interference or discharge damage circuit/interface Protection Circuit Bav99 is designed for the purpose of ESD. It is afraid that the signal line is vulnerable to ESD Interference or discharge damage the circuit. Because these interfaces are interconnected with each other, it is afraid that the received signal has large static electricity. When several

10Official version KMS activation key:win10TH1Pro10240.ESD Professional, Enterprise, education "title=" Windows10Official version KMS activation key:win10TH1Pro10240.ESD Professional, Enterprise, education "> Windows 10 official version KMS activation Key:win10 TH1 Pro 10240.ESD Pro, Enterprise, Education edition based on Win10 TH1 Pro 10240.ESDx86/x64 Profession

A while ago a friend said they had a project in which there was a process circuit for ESD protection. I couldn't understand it at the time. But then the more I see the more I understand. Now share with you. is also a contribution to high-tech. The right of the regulator diode plays the role of the control voltage, when the regulator diode conduction, will be in its high over a current, the current through the resistance below, will cause the voltage o

Introduction to the WinPE System Maintenance tool:1, Toolbox based on Windows 8 64-bit system production.2, the powerful DG Partition Tool Professional Edition 4.9.1 (DOS version for 4.9.0).3. hack Windows password tool.4, hard disk, memory detection tool.5, President of SGI System, installation of Gho/wim files, backup system, etc.6, the latest stable version dism++10.1.17.2 the strongest system Cleanup tool.7, Windows installation Tool WinNTSetup3.8.7 BETA4, professional installation wim\

EMC testing consists of 4 main items:1. ESDUsing electrostatic gun test, contact voltage ±6kv, the whole box and the internal visible metal parts are detected;Air discharge positive and negative 8KV, detection of the box and the internal metal parts (such as Board jam body), the special detection of 220V power Plug and switch place.Note: The contact discharge and air discharge test is different from the electrostatic gun tip, contact discharge tip for sharp metal.2. SurgeSurge Test Power Interfa

The IC device on the computer board is very sensitive to electrostatic pressure. People or things with static electricity, contact with electrical devices will produce static electricity, and the release of electrostatic high-voltage will damage the device. Therefore, in the maintenance of the computer must pay attention to the protection of static electricity before the removal of the computer must do the following: 1. Disconnect all power supplies. 2. Before opening the case, both han

http://bbs.21ic.com/forum.php?mod=viewthreadtid=679682page=1#pid3911906 Pic does not have a programmatic reset, and the probability that you can get into the programming state is very small, and the probability that you are present is very high, which means it is not caused by this problem.In fact, the ESD reset is basically affected by the reset of VCC and MCLR, such as when you test for an IO port, because the pic IO port has a VCC/GDN pull/drop-do

middle interval strata. As shown in 3.10e.(8) Select the surface mount device as far as possible, and select small size components as far as possible. Because the interconnect length of the SMD device leads is very short, the inductance, capacitance, and resistance of the leads are much smaller than the dip devices.(9) Comprehensive use of grounding, shielding and filtering measures.Anti-ESD design for 3.1

life of the ESD problem is also frequent occurrence. Following the progress of the network device chip process, the speed and function of the chip must be improved, but the chip becomes rather fragile. A not too high ESD voltage can be used to penetrate the transistor, a not too large ESD current can be used to fuse the wire. Since static electricity is the invi