the root cause of flip-flop charging logic if you insert wall charger

[Werner Almesberger]

matt_hsu wrote:
> Do you think this elevator-style-signal is caused by system?

Hmm, 700ms would be amazingly long for contact bounce.

Oh, but what insertion is this ? Wall charger into USB port or wall
charger into mains ? Both cases are relevant and probably look very
different.

Thanks for the pictures !

- Werner