Electronics > Beginners
Old Wire Wound Resistors
Wallace Gasiewicz:
Hope this is the appropriate spot to post
I recently acquired a bunch of old wire wound resistors New Old Stock
402.2 K 1/10 %
NAT. RES. Pearl River New York
They are within specs still Measure 402.2 K on my Biddle Bridge and all are very close in values on my HP 3456
About 1.95 Henries on my Genrad
Were these used in any equipment that anyone knows of?
CaptDon:
I can't imagine the value of a high ohmage resistor with that much inductance.
CaptDon:
It kind of occurred to me at 1.95 Henries that is a lot of wire. I see the 1/10th % rating on the resistance. I should think that would vary drastically with temperature change? I guess the wire could be a blend of different metals but I am not sure zero temperature drift can be obtained, at least within .1% across say 0c to 70c? Just pondering how this thing was used? Cheers mate, hope someone can chime in on its intended use.
amyk:
I suspect they would've been used in vacuum tube circuits.
Kim Christensen:
--- Quote from: Wallace Gasiewicz on March 23, 2023, 12:01:27 pm ---About 1.95 Henries on my Genrad
--- End quote ---
Are you sure that's an accurate measurement? Doesn't sound right to me at all.
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