You want the stuff sold for laxative use, USP Mineral Oil, sometimes
trademarked Nujol. You do NOT want Baby Oil.
-John
Hi
Some drug store mineral oil has extra stuff in it. This is one case
where you want the cheap generic version rather than the improved name
brand.
Bob
Hi Chris: Maybe used to be PCB's (yuck) You can use mineral oil, available
at your friendly drugstore. Make sure everything is covered, leave a
little for thermal expansion, don't need too much airspace. Use 'em on a
paper towel, and if they are over full, they'll leak out the pinhole that
lurks
What I have seen in the old text books is that these resistors all sit in a
tub with oil around them. The oil is at some higher temperature.
I have a few of these resistors and no oil in them nor will I be putting oil
in them.
They seem to work to the limits of resolution of my test gear. 5.5
Plain old mineral oil, also known as paraffin oil, as can be found in any
drugstore.
They should be filled above the element, but not quite full. Maybe 3/4 to 7/8
full. It isn't really important.
-Chuck Harris
Chris Erickson wrote:
I bought some old Leeds Northrup standard resistors on
Hi
Some drug store mineral oil has extra stuff in it. This is one case where you
want the cheap generic version rather than the improved name brand.
Bob
On Feb 1, 2010, at 5:56 PM, Chuck Harris wrote:
Plain old mineral oil, also known as paraffin oil, as can be found in any
drugstore.
The stuff in the store generally has Vitamin E in there as a stabilizer, and
sometimes fragrance if marketed as baby lotion. Get the stuff for use as a
laxative and it *should* be okay. I had to buy tens of gallons of this
stuff from the local pharmacies because the local national laboratory saw
