Anti-electromagnetic-interference circuit board
An anti-electromagnetic interference and circuit board technology, which is applied to printed circuit components, electrical components, magnetic field/electric field shielding, etc., can solve the problems of increasing circuit board stacking, increasing costs, and unsatisfactory effects, so as to reduce electromagnetic interference, Mutual interference reduction effect
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Embodiment 1
[0020] Such as figure 1 As shown, an anti-electromagnetic interference circuit board includes a circuit board 2 provided with an inductor 1, a mechanical hole 3 is provided in the area where the inductor 1 is installed on the circuit board 2, and the power plane and the ground plane in the circuit board 2 and / or interconnection lines all avoid mechanical holes 3 .
[0021] In this embodiment, aiming at the electromagnetic interference problem of the inductor 1 in the circuit board 2, a mechanical hole 3 is provided in the area where the inductor 1 is installed on the circuit board 2, wherein the mechanical hole 3 penetrates the entire circuit board 2, that is to say, The mechanical hole 3 passes through the power plane and the ground plane on the circuit board 2. Therefore, the position opposite to the mechanical hole 3 on the power plane and the ground plane is empty, and the power plane, the ground plane and / or the power plane on the circuit board 2 The interconnection line...
Embodiment 2
[0026] Such as figure 2 As shown, an anti-electromagnetic interference circuit board includes a circuit board 2 provided with an inductor 1, and the area where the inductor 1 is installed on the circuit board 2 is provided with a forbidden area 4, and the power plane and ground in the circuit board 2 The planes and / or interconnection lines avoid the forbidden area 4 .
[0027] Wherein, the area where the inductor 1 is installed on the circuit board 2 corresponds to all layers of the circuit board 2, that is to say, each layer of the circuit board 2 is provided with a prohibition on the position of the area where the inductor 1 is installed. Layout area 4, so, on the power plane on the circuit board 2, ground plane also is provided with forbidden area, makes power plane, ground plane and / or the interconnection line between each device in the circuit board 2 all avoids this forbidden area. Layout area 4, so that the power plane in the circuit board 2, the ground plane and / or v...
Embodiment 3
[0031] Since the mechanical holes set on the circuit board need to consider the installation requirements and anti-interference requirements of the inductor, when the mechanical holes set on the circuit board are too large, it will affect the installation of the inductor, but if the mechanical holes are too small, the area on the circuit board that avoids the electromagnetic field will be If less, the anti-interference effect will be reduced. Therefore, different from Embodiment 1, this embodiment sets the mechanical hole in the area where the inductor is installed on the circuit board and also sets the forbidden area, so that sufficient mechanical holes can be reserved during the design of the mechanical hole. There is space for the inductor to be installed, and it can be combined with the prohibited area to form an electromagnetic avoidance area to ensure the effect of anti-interference. Preferably, the range of the forbidden area is equal to or larger than the hole area of ...
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