Larry wrote:
"Eisboch" wrote in
news

the impedance of the switching power supply appears as a
dead short to ground, tripping the GFI type breaker. There's

nothing

wrong with the circuit, it's just a characteristic of the

supply type.




The input of any switching power supply is merely a full wave
bridge rectifier and some LARGE electrolytic capacitors, which
are what causes the huge surge when you plug them in...charging
those caps.

They use large caps for a reason.....to reduce the effects of
powerline pulses, especially OFF pulses that blink your lights.
The large caps can hold up the output DC for several hundred
milliseconds during those brief power "blinks".

Unfortunately, the idiots are trying to see how few parts they
can make them out of so leave out any surge-reducing varistors or
even low value surge resistors from the primary circuit that
would stop the huge pulse and plug-in-arcing.

Larry


Wouldn't adding something like a starting capacitor fix that?