| 摘要 |
PROBLEM TO BE SOLVED: To provide an input circuit which is down-sized by reducing the number of parts, and which is reduced in loss. SOLUTION: In the non-insulated input circuit in which a signal is inputted into a versatile IC9 by using a switch 3, a first resistor 4 is connected to an anode of a diode 5, the other end of the first resistor 4 is connected to an equipment voltage 2, the anode of the diode 5 and the connection part to the first resistor are connected to the switch 3, the other end of the switch 3 is connected to the grounding side of the equipment voltage 2, the cathode of the diode 5 is connected to a logic grounding point 6 lower by the share of logic circuit voltage via a second resistor 7, and the cathode signal of the diode 5 is connected to a versatile IC8. COPYRIGHT: (C)2007,JPO&INPIT
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