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Can someone tell me what would happen if you plug this onto a USB charger via an adaptor that is plugged to 220V AC?
by colorincorrect 7y ago
Can someone tell me what would happen if you plug this onto a USB charger via an adaptor that is plugged to 220V AC?
- wl 7y agoQuite possibly nothing. A USB charger following the USB Battery Charging Specification has a resistor < 200Ω across D+ and D-. Just putting -200 V on D- and doing nothing to D+, there's not a completed circuit. If the charger uses the data lines for anything (e.g. Apple devices), perhaps it'd burn out whatever microcontroller is running things in the charger.