| 摘要 |
PROBLEM TO BE SOLVED: To generate a certain output voltage without manually changing an input supply voltage, even when the input supply voltage differs and simplify circuitry. SOLUTION: A power supply circuit is provided with a voltage detection unit 2 that detects the voltage of input power supply, a voltage conversion unit 4 that converts different voltages of the input power supply into a certain output voltage, and a circuit switching unit 3 using a relay 14 that switches the voltage of the input power supply of the voltage conversion unit 4 based on the result of detection by the voltage detection unit 2. COPYRIGHT: (C)2011,JPO&INPIT
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