I have a big O wirewound resistor I keep cool in a container of water. It's my ~100W test load. I move a tap to create different resistance's. Terminal voltages can get around 100VDC.
The terminals and tap are rusting. :(
Is there something safe I can add to the water to reduce or eliminate the rust. With 100VDC in the water I'm concerned about electrolysis erosion...
Perhaps add.. Automotive coolant? (Propylene glycol, the nontoxic one.) Or use it pure..
Or maybe use methyl alcohol? (+ some water to reduce fire hazard. ) I dunno...steaming methyl fumes :P Vodka might be better...
Did some reading on:
Vitamin C + water ?? Get calamine at the pharmacy. Add to water.? Zinc oxide sun block + water? Go nuts and toss in a hot dog (Sodium nitrite) :P
I dunno...maybe these ions might do some funky electrolysis.
Or just give up on water and go to icky oil Like on
Pharmacy mineral oil? Baby oil will smell nice.. :P Hydraulic oil ?
Canola oil? Brake fluid?
What to choose?
D from BC