Joseph Gwinn wrote:
And the same is possible if the "lamp" burns out at just the wrong
time, as it is prone to do with the voltage fluctuations during
run-up. Bright-light is not as sensitive, but somewhat safer.


Use two lamps, one "lamp on" (in a green globe), the other "lamp out"
(and in a red globe)?

Joe Gwinn
Joe there is a saying something about making it Idiot proof and
what happens along comes a biger Idiot. :-)
...lew...