Re: [volt-nuts] Open day at the National Physical Laboratory (NPL) on Thursday 17 May 2018.

Man, that would be wonderful! Pity the flight from California to the U.K. is considerable more than £3! Jeremy N6WFO On Tue, Apr 3, 2018 at 2:08 PM Dr. David Kirkby < drkir...@kirkbymicrowave.co.uk> wrote: > NPL opens their doors to the public once every 2 years. It is well worth > going. Ticke

Re: [volt-nuts] How can I make a 2000 V DC meter with an input resistance of at least 100 T ohms?

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 On Sat, Mar 24, 2018 at 10:18 AM Mark Sims wrote: > Many years ago, there was an article (in Popular

[volt-nuts] HP-3455A calibration

My new-to-me 3455A DVM (s/n 1622A06699) does not want to calibrate to the 10 Volt level although 1 Volt is fine. The 10V adjustment pot in the 11177B reference assembly simply doesn't adjust far enough—I can get the reading down to 10.00020 Volts but no lower. Just for the heck of it, I picked

Re: [volt-nuts] Neon bulbs for HP 3420B or 419A chopper circuit

Thank you, Charles, for the excellent summary and references. Jeremy N6WFO On Fri, Nov 17, 2017 at 6:23 AM Charles Steinmetz wrote: > David wrote: > > >> to buy NEW bulbs from a reputable manufacturer who provides specs > > > > Any recommendations - I can't find a source in UK. I know Philip

Re: [volt-nuts] Banana jack shorting straps

It would be interesting to see results of a resistance measurement of some of these "shorts" using an appropriate low-resistance instrument. Jeremy N6WFO On Sat, Nov 11, 2017 at 8:09 AM Don@True-Cal wrote: > Mark, > I would recommend duplicating the Fluke 8508A-7000K 4W Short Calibration > Boa

Re: [volt-nuts] Banana jack shorting straps

Previous Next Did you hear about the dyslexic, agnostic insomniac? He stayed up all night wondering if there was a dog. On Wed, Nov 8, 2017 at 2:20 PM Mark Sims wrote: >