[Amps] Grid fuses (was: Life and gain of 3-500Z)

[Peter Chadwick]

Another point to remember about using resistors as fuses is that unless the manufacturer guarantees the fusing current, time and prospective fault voltage, you haven't a clue if the results are repeatable from batch to batch - or even from resistor to resistor. A change in manufacturing process (or factory) can mean totally different results.
And if you test the part for fusing capability, you can't use it afterwards!
73
Peter G3RZP