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Electronics-Lab.com Blog » USB AA NiMH and NiCd Battery Charger
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日期:2024-05-25
Any USB port can supply 5V at up to 500mA. The USB standard specifies that a device may not use more than 100mA until it has negotiated the right to use 500mA, but apparently no USB ports enforce that requirement. This makes the USB port a convenient ......看更多