Check with Edwin Pettis at Ultrohm in Grand Junction, Co. H ewinds superb ww resistors using Evanohm wire with tempcos under 3ppm/degC, with 0.01% tolerance for around $14 each. I’ve bought some and have been extremely pleased. Don’t know the largest he can make or at what price…
[email protected] Dick Moore > Message: 1 > Date: Thu, 6 Aug 2015 16:25:54 +0100 > From: "David C. Partridge" <[email protected]> > To: "'Discussion of precise voltage measurement'" <[email protected]> > Subject: [volt-nuts] Precision resistors > Message-ID: <5D9EFA13BAB94DCA901607C1EDEA4911@APOLLO> > Content-Type: text/plain; charset="UTF-8" > > Looking for a set of precision resistors for calibration purposes. > > I need the following values to calibrate the ohms ranges on my meters: > > 100 > 1k > 2k > 10k > 20k > 100k > 200k > 1M > 2M > 10M > 20M > > The crucial factor isn't that they be *exactly* the values above, so I don't > necessarily need 0.001% parts. Low TCR is important, and I will need to know > that actual values to 10ppm or better. > > I'm looking for suggestions on the best choice of parts and pricing? I > believe the Vishay HZ series may fit the bill for the lower values but they > may be rather expensive. > > Regards, > David Partridge _______________________________________________ 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.
