grounding bracelet

electric energy. They determine the number of devices in the Power Distribution Device and indicate how to connect generators, transformers, and lines, and how to connect to the system to complete the transmission and distribution task. 9. Current Transformer: The instrument converter is an instrument that converts large current into small current. 10. Transformer: a static electrical device used to change the AC voltage of a certain value to another type or multiple types of AC voltage with th

line!The most fundamental problem is that the current going through this line is going to two different circuits.Suppose there are two currents, a digital stream, and a model stream starting from the ground at the same time. There are 2 devices, several devices, and modules.If the two circuits are not separated, the loss voltage is V when the model flow is back to the front of the grounding end of the several parts.V = (digital stream + die stream) x

potential reference point, but it is not necessarily a terrestrial potential. If the grounding system is connected to the Earth by a low resistance path, it is called the Earth. If the grounding system is not connected with the Earth, but is insulated from the Earth, it is called a DC suspension. Usually after the appropriate treatment and grounding, that is, th

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point-to-point connection channel, it is very difficult to achieve, because the information plug-in, jumper, and so on are difficult to achieve full shielding, coupled with the corrosion of the shielding layer, oxidation damage and other factors, therefore, no channel can truly block the whole process. At the same time, the shielding layer of the shielded cable has poor shielding effect on the low-frequency magnetic field and cannot resist the low-frequency interference caused by equipment such

floor should not have a telephone switch room. However, some units are restricted by the conditions and do not set up switch rooms in accordance with the above principles. For example, the Programmable switch room of Guangdong Ying hotel is located in the basement room on the building. According to the relevant provisions of IEC1312-1 lightning electromagnetic pulse protection, the building area in the lightning protection area is divided into LPZOB area, the electromagnetic field in the area d

Programmable switch room of Guangdong Ying hotel is located in the basement room on the building. According to the relevant provisions of IEC1312-1 lightning electromagnetic pulse protection, the building area in the lightning protection area is divided into LPZOB area, the electromagnetic field in the area does not decay, the switch is greatly affected by the electromagnetic field. Determine the grounding system of the switch The

called the logic location. In order to make the computer work normally, the DC ground is the zero potential reference point, but not necessarily the ground potential. If the ground system is connected to the Earth through a low-resistance path, it is called a ground connection. If the grounding system is not connected to the Earth, but insulated from the Earth, it is called dc suspension. Generally, after proper treatment,

need to be connected to the final resistance. The final resistance is generally 100 Ω in the RS-422 network, and 120 Ω in the RS-485 network. It is equivalent to the resistance of the characteristic impedance of the cable, because the Characteristic Impedance of most twisted pair cables is about 100 ~ 120 Ω. This matching method is simple and effective, but there is a drawback that the matching resistance consumes a lot of power and is not suitable for systems with strict power consumption rest

capacitor C to cut off the DC component can save most of the power. However, the value of capacitor C is a challenge, and the compromise between power consumption and matching quality is required. There is also a matching method using diodes, 10. Although this solution does not achieve true "matching", it uses the clamp action of the diode to quickly weaken the reflected signal and improve the signal quality. The energy saving effect is remarkable. Figure 9 10 6.