Jisho

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でんげん 電源
Noun
1. switched-mode power supply; switching regulatorEngineering term
Wikipedia definition
2. Switched-mode power supplybelow A: input EMI filtering; A: bridge rectifier; B: input filter capacitors; Between B and C: primary side heat sink; C: transformer; Between C and D: secondary side heat sink; D: output filter coil; E: output filter capacitors.    The coil and large yellow capacitor below E are additional input filtering components that are mounted directly on the power input connector and are not part of the main circuit board.
Read “Switched-mode power supply” on English Wikipedia
Read “スイッチング電源” on Japanese Wikipedia
Read “Switched-mode power supply” on DBpedia

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