| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply unit with a simple configuration, capable of outputting widespread voltages including lower voltages to higher voltages than a power voltage.SOLUTION: A voltage boosted by a step-up power supply comprised of a coil L1 and a switching element SW1 is divided into a capacitor C1 and a load 2 connected in series and thereby a lower voltage than a power voltage of a DC power supply 1 can be output without addition of a step-down switching element and a control circuit thereof. With an intrinsic characteristic of the step-up power supply, widespread voltages including lower voltages to higher voltages than the power voltage can be output with ease. |
