On Tue, 3 Sep 2002 15:49:43 -0700 (PDT),
  Rich Nute <[email protected]> wrote:

> If you use a PTC, then your output need not necessarily be 
> considered "inherently limited."  In this case, your 
> maximum output current is 100 amps and your maximum VA is 
> 250, i.e., 25 amps (with the PTC shorted).  The trick is 
> to determine if your test houses can class the PTC as an 
> "overcurrent protective device."  

Is it permitted to use PTC as an overcurrent protective device
for power sources not inherently limited?
I don't have EN60950-1 here, but I remember it must be a fuse
or other non-autoreset device.

Regards,
Tom

--------------------------------------------------
Tomonori Sato  <[email protected]>
URL: http://member.nifty.ne.jp/tsato/

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