POWER SUPPLY CIRCUIT
To provide a power supply circuit capable of specifying an abnormal switch from among switches provided for a plurality of loads.SOLUTION: In a power supply circuit 10 in which a plurality of loads 14, 16, and 18 are connected in parallel to a common power supply 12, and load side switch 34, 36, and...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a power supply circuit capable of specifying an abnormal switch from among switches provided for a plurality of loads.SOLUTION: In a power supply circuit 10 in which a plurality of loads 14, 16, and 18 are connected in parallel to a common power supply 12, and load side switch 34, 36, and 38 are respectively provided for the load 14, 16, and 18, an abnormality determination unit 48 determines load side switches 34, 36, and 38 that have an abnormality among the plurality of load side switches 34, 36, and 38 on the basis of a time change of the potential difference after a switch operation unit 46 operates the load side switches 34, 36, and 38 from off to on.SELECTED DRAWING: Figure 2
【課題】複数の負荷のそれぞれに対して設けられたスイッチに対して、異常が生じているスイッチを特定できる電力供給回路を提供する。【解決手段】共通の電源１２に対して複数の負荷１４、１６、１８が並列に接続され、各負荷１４、１６、１８に対して負荷側スイッチ３４、３６、３８が設けられた電力供給回路１０において、異常判定部４８は、スイッチ操作部４６がそれぞれの負荷側スイッチ３４、３６、３８をオフからオンに操作した後の電位差の時間変化に基づいて、複数の負荷側スイッチ３４、３６、３８のうち、異常が発生している負荷側スイッチ３４、３６、３８を判定する。【選択図】図２ |
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