Ian wrote...

> The other important point is that fuses provide ZERO protection until 
> AFTER they have blown. In the life and death of a semiconductor, even a 
> few milliseconds is a very long time indeed.

I like to tell the story about a series of tests we did when I worked at 
Fairchild, in 
Silicon Valley.  Our little VHF silicon transistors were very expensive, and 
quite 
fragile.  We tested many fuses to identify which one(s) would be suitable 
protection 
for the transistors.  To summarize:  transistors are a very effective way of 
protecting 
fuses!

73,

George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 2-3, 2010


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