USB charging, part 1: requirements
USB charging, part 1: requirements
Posted Jul 26, 2016 15:40 UTC (Tue) by jem (subscriber, #24231)In reply to: USB charging, part 1: requirements by jezuch
Parent article: USB charging, part 1: requirements
A power supply does not send power to a device, the device draws power from the supply. The voltage is fixed at 5 volts (newer versions can supply 20 volts, when negotiated), the current drawn is up to the device.