Digital process input unit for computer
专利汇可以提供Digital process input unit for computer专利检索，专利查询，专利分析的服务。并且PURPOSE:To simplify the unit with less number of expensive photocouplers, by isolating the serial signal with photocouplers after converting the signal before isolation into the serial signal at shift registers. CONSTITUTION:The state of process is detected with ON-OFF operation of a plurality of limit switches 11, a voltage from the AC power supply 18 is fed to the switches 11, the current from the current limit resistor 12 is rectified at the rectifying circuit 13, and pulsing current from the rectifying circuit 13 is smoothed at the smoothing circuit 23 and fed to the shift register 21. Further, a voltage from the power supply 18 is stepped down with a step down transformer 22, and a DC voltage is fed to the register 21 via the rectifying circuit 13 and smoothing circuit 24 independently of the power supply for computer. Further, all the states of ON-OFF of the switches 11 are informed to the register 21 and after converting the status signal into the serial signal, it is added to the photocoupler 15 and the output signal from the coupler 15 is fed to the computer as the serial signal.，下面是Digital process input unit for computer专利的具体信息内容。
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