On 24 March 2018 at 17:34, Jeremy Nichols <[email protected]> wrote: > I made a high-value resistor using motor oil and a couple of stainless > bolts. It worked for what I was doing (testing an HP-425A > Microvolt-Ammeter) but calculated as only 8,500 Megohms. > > Jeremy >
I had some discussions some time ago about using oil as a dielectric in a capacitor with someone at NPL. He said the loss of both cyclohexane and Polydimethylsiloxane (PDMS = silicon oil) is very low. He said the only way I would measure the loss of them was a resonate method, and detecting small changes in Q. My thoughts on putting them as the dielectric in a capacitor and measuring on an LCR meter would not work, nor would my transmission line. I had already satisfied myself that using a coaxial probe and VNA would not work. As he said, cyclohexane is nasty stuff, but PDMS is much more environmentally friendly. Dave _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
