| 摘要 |
PROBLEM TO BE SOLVED: To provide an input circuit with little loss, miniaturized by reducing the number of components. SOLUTION: This input circuit comprises: a switch 3 connected to an apparatus power source 2; a first diode 4 with the other end of the switch 3 connected thereto; a first resistor 6 with the cathode of the first diode 4 connected thereto for pulling down an inputted signal; a second diode 5 with a joint part between the cathode of the first diode 4 and the resistor 6 connected thereto; and a second resistor 7 connected to a control power source 8. The joint part between the anode of the diode 5 and the second resistor 7 is connected to an input part of an electronic apparatus 9. COPYRIGHT: (C)2006,JPO&NCIPI
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