Re: Hmm!
- From: "Phil Allison" <philallison@xxxxxxxxxx>
- Date: Mon, 28 Apr 2008 10:29:58 +1000
"Trevor Wilson"
"Phil Allison"
..
**Depends on the fuse. I just measured half a dozen 0.25 Amp 3AG fuses.
They ranged from 12 Ohms up to 15 Ohms. COLD.
** That is an unbelievably high resistance value - not at all
consistent with a 250mA fuse.
**Nevertheless, it is correct.
** What is the brand of the fuses and where did you buy them ?
No brand, 1/4 amp 3AG fuses I checked ranged from 3.5 to 4.5 ohms.
These values are at the upper limit for a 250mA rated, fast acting fuse.
These 20mm "T" or delay fuses from Bussman are speced at 0.66 ohms for a
250mA size:
http://www.farnell.com/datasheets/81115.pdf
The specs show that R rises to 1 ohm at rated current.
** The cold value is 0.66 ohm - not 12 or 15 ohms.
Your figures are completely non-typical.
....... Phil
.
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