Taichung City Council member Li Zhong said that the LED street light is not illuminating, and the failure rate is very high. The central subsidy installation will require a maintenance fee in the future.
The Taichung City Construction Bureau stressed that this budget is used to replace old-style mercury street lights. Even if it is deleted, it will not affect local lighting and respect the parliamentary resolution.
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Multilayer PCB is a circuit board with two or more layers. The material unlike Double-Sided PCBs with only two conductive layers all multilayer PCBs is that it must have at least three layers of conductive material, and the PCB boards are buried in the center of the material.
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Higher assembly density
Smaller size (considerable savings on space)
Easier incorporation controlled impedance features.
EMI shielding through careful placement of power and ground layers.
Reduces the need for interconnection wiring harnesses (reduces overall weight
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