"Leo Meyer" wrote in message
...
Hello!

I found a description of a series light bulb circuit on the net at
http://www.vintage-radio.com/project...-limiter.shtml
and there's a statement which confused me a bit:

"Note that the lamp is in the live side of the mains supply, not the
neutral.
This is for safety, so that the neutral side (and the chassis in AC/DC
sets)
stays close to earth potential no matter how much voltage is dropped
across
the lamp."

Now I built an isolation transformer into a box with a lamp socket
connected
to a bypass switch, i.e. if the switch is open both socket pins are
disconnected.

Which side of the tranny is the lamp ??
If you put it in the secondary it will reduce the "finger" hazard also the
ground for instruments I imagine.

--
Regards ............... Rheilly Phoull