switch - mode power supplyの例文

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1. These are now uncommon, but 5V wall-wart switch-mode power supplies capable of supplying several amps are a readily and cheaply available alternative.
2. To circumvent these problems, some computer switch-mode power supplies perform power factor correction, and may employ input filters or additional switching stages to reduce line interference.
3. Items with a switch-mode power supply operate almost entirely without problems, but if the item has a mains transformer, this can overheat depending on how marginally it is rated.
4. The switch-mode power supplies used in computers have historically had low power factors and have also been significant sources of line interference ( due to induced power line harmonics and transients ).
5. Switch-mode power supplies work by rapidly turning a semiconductor switch on and off; the switch connects a DC voltage level ( which is higher than the desired desired voltage ) to a rectifier and filter.