[Elecraft] K3 inline fuse

[Willis]

The transistor is the most probable reason for the fuse blowing but the fuse may save the other components and semi conductors as well as the circuit board.  The original query stated he would be using an Astron 35 which has a current limiter but limiting the current to 35 amps will still allow a lot of damage.

Sent from my iPhone

On Aug 13, 2010, at 9:55, gdaught6 at stanford.edu wrote:

> 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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