[SML] picky charger

[Me]

I just had a wireless charger refuse to work on a pure sine wave 
inverter.  I tried it on a wall outlet, works fine.  Tried again on the 
inverter, no work.

I checked the inverter output with a 'scope in differential mode, looked 
close to perfect.  So...???

Finally figured out the inverter isn't referenced to ground like the 
mains are.  Nothing cares except this one charger.  Must be a marginal 
design in the charger and the lack of a ground reference kills the 
function.

Every day is a surprise!

-- 
Jerry Durand, Durand Interstellar, Inc.
www.DurandInterstellar.com
tel: +1 408 356-3886
@DurandInterstel