Simple and high-efficiency relay matrix plate
A relay matrix and relay array technology, which is applied in the direction of instruments, simulators, computer control, etc., can solve the problems of high maintenance costs, increased costs, unfavorable production, etc., and achieve the effect of multiple matrix channels, convenient maintenance, and reliable performance
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[0012] Reference Figure 1-Figure 2 , This specific implementation adopts the following technical solutions: it includes a power supply circuit 1, a USB interface circuit 2, a serial port circuit 3, an MCU circuit 4, a drive circuit 5, and a relay array 6. The USB interface circuit 2, the serial port circuit 3 and the MCU circuit 4 The MCU circuit 4 is connected to the drive circuit 5 through the SPI IN interface. The drive circuit 5 is connected to the SPI OUT interface and the relay array 6 respectively. The power circuit 1 is connected to the USB interface circuit 2, the serial port circuit 3, the MCU circuit 4, the drive circuit 5 and The relay array 6 is connected to supply power.
[0013] The driving circuit 5 adopts the Darlington tube ULN2803 to improve the driving ability and at the same time acts as circuit isolation. The TVS tube eliminates the influence of the reverse electromotive force generated by the relay at the moment of power failure on other components.
[0014...
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