View Single Post
  #28   Report Post  
Posted to sci.electronics.basics,sci.electronics.repair
Phil Allison[_2_] Phil Allison[_2_] is offline
external usenet poster
 
Posts: 1,716
Default Fuse: fast blown vs slow blown


"Winston"
Phil Allison wrote:
"Winston"


** The price is very steep.


We agree.


** Yawnnnnnnnnnnnn....


But I expect the fuse IS safe when used in the Fluke DMMs it is specified
for.


Both the 'Fluke' brand and the commodity brand are safe, I suspect.

It wouldn't shock me to learn both kinds are sourced from the same
place.


** Nothing shocks a ****wit like you.


The scenario with a 0.125A fuse is nothing like the one with the 10A
range
fuse.

Typical 0.125A rated fast fuses have resistances of 8 to 10 ohms -
which
limits the fault current to a value the fuse can easily break.

A 10 amp fuse may well have a resistance of only a few milliohms, so the
fault current is only limited by the resistance of the DMM's leads.

A current of 40 amps is easy enough for a small fuse to break, while one
of
over 4000 amps is not.


We agree on that, too.



** GIANT Yawwnnnnnnnnnnnnnnnnnnn

**** off ******.


.... Phil