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A comment on Pump up the charge: Getting -5V from a 5V power supply. Parent comment

Re:Pump up the charge: Getting -5V from a 5V power supply by jacquesm on Monday October 11, 2021 @09:38AM (#28828169)
Only for very small currents. For larger currents you use a proper DC-DC converter; another stage on your switched supply or more windings on your transformer if you're still in the Analog Age.
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