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Why is grounding resistance generally not greater than 4Ω?

Grounding resistance is the current from the grounding device into the earth and then flow through the earth to another grounding body or to the distant spread of the resistance encountered, which includes the grounding line and the grounding body itself, the resistance of the grounding body and the earth's resistance between the contact resistance and the resistance of the earth between the two grounding body or the earth grounding body to the infinite distance of the earth's resistance. The size of the gr....
2024-09-14 11:31:06 1232
Why is grounding resistance generally not greater than 4Ω?

About 485 communication instability problem solution

Preface 485 communication instability problems (specifically manifested as sometimes can communicate on, sometimes communication is not) RS485 in the connection with too many devices, communication distance is too long, twisted-pair cable quality is poor, wiring is not standardized and so on, will lead to communication instability problems. Solution: A few concepts about 485 bus. 1. 485 bus communication distance can reach 1200 meters. According to the theory of 485 bus structure, under the premise of....
2024-09-10 11:37:19 686
About 485 communication instability problem solution

Gallium Nitride Offers Powerful Solutions in High Voltage Applications

In the field of electrical engineering, the trend toward higher operating voltages is driven by the need for increased efficiency and power density in a variety of applications. Gallium Nitride (GaN) technology is emerging as a powerful solution to meet these needs. In industrial environments, internal voltage rails are also moving up. These higher voltages are critical for delivering higher power in applications such as motor drives, compressors and large HVAC systems. Rapidly growing consumer and industri....
2024-09-06 10:41:27 614
Gallium Nitride Offers Powerful Solutions in High Voltage Applications

How to reduce parasitic capacitance in PCB layout?

Noise in electronic systems can take many forms. Whether it is picked up from an external source or passed between different areas of a PCB layout, noise can be picked up unintentionally in two ways: parasitic capacitance and parasitic inductance. Parasitic inductance is relatively easy to understand and diagnose, both from a crosstalk perspective and from the coupling of seemingly random noise between different parts of the board. Dealing with parasitic capacitance is not necessarily more difficult, but it....
2024-09-04 10:58:42 1011
How to reduce parasitic capacitance in PCB layout?

Ultra-practical PCB layout wiring rules

Layout Component layout of the 10 rules: In accordance with the “first big and then small, first difficult and then easy” principle of layout, that is, the important unit circuits, core components should be prioritized layout. Layout should refer to the schematic block diagram, according to the main signal flow law of the single board to arrange the main components. Components should be arranged to facilitate debugging and maintenance, that is, small components around the large components can n....
2024-09-02 17:50:11 1001
Ultra-practical PCB layout wiring rules

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