Communication system and current amplifying device with input device whose input state is monitored
A communication system and current amplification technology, applied in the field of communication systems, can solve the problems of expensive sensors and unreliable identification of input current, and achieve the effect of reducing transition resistance
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[0024] figure 1 An embodiment of a communication system 10 including an input device 20 is shown in FIG. The input means may be formed as a digital input device. It can be understood that the input device 20 can be an input and output device, a control device or a component of a field device, and the input device can have both a digital input and a digital output. The communication system 10 can work in offline operation, or can be an integral part of an automated machine.
[0025] The input device 20 can be provided with a supply voltage terminal U V , the supply voltage terminal is denoted by reference numeral 30 . At the supply voltage terminal 30 at a supply voltage U V Above, the supply voltage is provided by a DC power supply 40, for example. The DC power source 40 can be, for example, an external DC power source which is connected to the input terminals 52 and 54 of the input device 20 . The DC power supply 40 provides, for example, a supply voltage of 25 volts. ...
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