Electronic control device
A technology for electronic control devices and multilayer circuit substrates, applied in circuit devices, printed circuit grounding devices, printed circuits, etc., can solve the problems of not being able to use low-cost resin materials, achieve excellent reliability, and improve noise resistance Effect
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[0025] figure 1 It is a sectional view of the first embodiment of C / U in the present invention. Below, follow figure 1 to explain each symbol.
[0026] A multilayer circuit board 8 such as a glass epoxy board or a ceramic board is arranged in a space covered by the resin cover 1 and the metal base 2 , and electronic components (not shown) are mounted on both surfaces of the multilayer circuit board 8 . The electronic components mentioned here include: ICs, resistors, capacitors, inductors, and mechanical relays.
[0027] The multilayer circuit board 8 is composed of a signal pattern 4, a GND pattern 5, an important signal pattern 6, and a multilayer circuit board insulating layer 7, and is directly / indirectly connected to external circuits such as a power supply, a load, a sensor, and a switch. The signal pattern 4 mainly includes a power supply pattern, an overall power supply layer, an input circuit pattern, an output circuit pattern, and a circuit pattern for connectin...
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