anti-static wrist sap from the static conductive material, through direct contact with the skin, the body static guide to go directly, so the use of wrist band must be good contact with the skin, the skin on the instantaneous elecostatic voltage, the 100v. antistatic chairs elecostatic conductive fabric for the fabric, their contact with people is not static, and can rapidly discharge static elecicity carried by the body itself, the leaders of the earth, play a role in elecostatic protection. 5. the production process esd elecostatic protection led chip to the package from application (ying1 yong4) of the production process more complex to anti-static terms, is a comprehensive management process and should permeate all aspects of production and production processes according to process requirements, propose different sategies to achieve the effective elecostatic protection device.
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mosfet overload, overheat protection. japan's murata manufacturing, held july 21 in which the "techno frontier 2010", on display for digital power led lighting circuits. the show is clear sodick murata developed for the power supply module. the input and output capacitors of the company's multi-layer ceramic capacitors (mlcc), can be built in the saight tube led tube lighting apparatus. when compared with the use of elecolytic capacitors, in addition to reduced product size, but also to extend product life. in order to obtain constant current, using the d micro-conoller, switching frequency of approximately 200khz. output capacitor uses two about 5μf the mlcc.
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the definition of the type look, the power factor λ relationship constitutes two basic amount of p and s are the power supply conol device and the led module assembly system active power and apparent power, does not include feedback to the power supply eleconic conol unit conducted interference components. thus, in testing, according to iec 61000-3-2 standards, measuring insuments and eleconic conol devices should be required between the bandwidth increases with a 5khz low-pass filter or filtering function used with this digital power meter (such as yokogawa wt2010 and wt3000, etc.), so as to ensure reasonable power factor of the project and accuracy of detection. (for the terms of the detection principle and the detailed requirements see the light conol device materials publicizing chapter xix "iec61000-3-2 standards and the detection principle of" article.) eleconic conol device from the line-side view, is non-linear components, so starting a λ to represent the power factor.
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