Thread: Surge / Ground / Lightning
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Default Surge / Ground / Lightning
bud-- wrote:

wrote:

In alt.tv.tech.hdtv bud-- wrote:

| The last standards for simulating typical surge waveforms I have
seen | (IEEE) were
| 1.2 us rise time, 50 us duration
| 8 us rise time, 20 us duration
| a ring wave with a frequency about 100kHz.

So now you are saying these figures represent a typical surge waveform,
as opposed to the worst case waveform you said a long time ago.


Still missing - your source that indicates nanosecond rise times and
100MHz spectrum.


What does the "/" mean in that case, anyway? I never got to ask you that
before. Does it mean "divide 1.2 by 50"?


It is standard notation in the surge field. 1.2 us risetime and 50 us
duration

Sloppy notation.
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