Friday, June 29, 2012
The mini design makes green laser pointer portable
Translucent polyester film conductive shielding electronic equipment display window, the transmittance: 70%, the best shielding performance: 40 ~ 60dB. 9) shielding ventilation panels 10) Shielding Tape A, electromagnetic shielding tape B, the protective tape conductive flange 5, the special parts of the shield room 1) apertures shielding conductive pad; coiled-coil spring; shielding of the coiled-coil; performance shielding of; silicone rubber shielded gasket; multiple seal; finger shrapnel liner; metal woven mesh liner; conductive rubber lining and electricity. 2) The green laser pointer applies the brand new plastic package.The window shield method A, cutoff waveguide or ventilation panels; B, coated or metal mesh shielding windows folder: for the display monitors. 3) the processing operation of the device (such as knobs button toggle switch, etc.) A, the signal frequency is high, you can use the principle of cutoff waveguide; B, the signal frequency is low, can make use of cofferdams will be split with other circuits Department off. 4) The indicator dial treatment A, the metal mesh shield B, cut-off waveguide method C, the use of filter D, plus isolation window of 5) through the shield wire A, shielded cable with the chassis fully sealed body composition; B, filtering. 6, shielded room of the ground or ground to discharge the charge potential and provides a baseline set of wires to connect. Ground two purposes, first, in order to protect the safety of persons and equipment, from lightning, leakage, static and other hazards, such as protective earth ground wire should be connected with the real earth.The brand new plastic package applied by this green laser pointer is exclusively used for exporting products to Europe and America. The second is to ensure the normal work as work ground. 1) suspended in A, the electrical equipment on the ground and the other with reference to the conductor insulation, the suspension device to; B, in order to prevent harassment on the chassis directly coupled to the signal circuit current, potential signal ground and chassis insulation, that cell circuit suspended ground. 2) single-point ground for many single-point grounding is connected with the circuit to provide a common reference point.The proper electric quantity indicating function of green laser pointer only remove the electroless embarrassment. The simplest parallel single-point grounding, it is not common impedance coupling and low-frequency ground loop problems, and therefore there is no harassment. 3) multi-point multi-point grounding to avoid ground single-point grounding at high frequencies problems. Digital circuits and high-frequency large-signal circuits must use multi-point grounding. Module and the circuit through a number of short-term (<0.1λ) connected to reduce the ground impedance common-mode voltage generated. 4) mixed ground mixture containing both single-point grounding grounding features also include multi-point grounding features. Such as: the power system needs a single point grounding, and the RF part of the multi-point grounding is required. Mixed use electric resistance grounding device to the grounding system in the low and high frequencies show different characteristics when it sensitive circuits in broadband is necessary.This green laser pointer is affiliated with an exclusive leather bag in standard configuration. Electronic equipment, mixing equipment, ground to ground is generally divided into two categories: power and signal ground. Equipment in various parts of the power ground are connected on the power bus, all signals are connected to the signal bus. The last two bus reference to aggregate to the public. In summary, the shield should be considered the engine room of the ground mixture of ground. 3 1 the specific implementation, decoration materials, decoration materials used in the selection, we should give full consideration to the existing room layout, decor, to the relevant standards-based materials required or recommended, so that the existing room with a unified, coordinated, and give full consideration to environmental factors, environmental testing to ensure compliance, will help staff their own health.
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