My original comment holds...

horsefeathers.


Jim




"David Lesher" wrote in message
...
"RST Engineering" writes:

If you look closely at an incandescent light bulb (especially the aviation
versions like the 327-28 volt and 330-14 volt) you will see that the
internals of the bulb start with a little dot of ceramic called the
"bead".

Well, I was not aware we were talking exclusively about aviation/space
rated lamps, but as it turns out while working for LeRC; I almost
emptied Building 142 with those unshortable lamps. I was driving
them with NE555's which turned out to be effective, if somewhat
smoky, fuses. The technician and I just looked at each other while
the cloud rose toward the smoke detector....the one going to the
sprinkler system and Evac alarms.