Steve,
There was a guy who worked there from 1982-1991 who developed a
pretty good telco lightning suppression circuit (for 6KV 600A 1uS/50uS
- and fully-functional afterwards!). I expect this would hold up well
to K.21 too. Look back through some old designs with my name on them.
I hope this helps....
Best regards,
Stephen C. Phillips
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----- Begin Included Message -----
>From [email protected] Thu Dec 12 11:24:16 1996
From: "DiBenedetto, Steve" <[email protected]>
> Hi everyone,
> A question on K.21 testing: I am looking for some
> information/advice on the requirement for CE mark and EN60950. How is
> this test done and what are the requirements? It is my understanding
> that originally the product (modems connected to PSTN) were only
> required to shut down when zapped by the high voltage test, in this
> case a fuse could be used along with a gas discharge tube. Now the
> requirement is that after the surge, the modem must still function as
> before. Is this true? any advise on possibly using a combination of
> GDT, polyfuse, thyristor? Thanks in advance!
>
> sd
----- End Included Message -----
