Re: [volt-nuts] Is there a "standard" much better than a LTZ1000, but much cheaper than a Josephson Junction Array?

Is US patent 6091281 just "whistling in the wind" or does it have some merit? On Oct 19, 2016 7:59 PM, "Attila Kinali" wrote: > On Thu, 20 Oct 2016 01:16:27 +0200 > Attila Kinali wrote: > > > As far as I am aware of, no. Beside the standard cells, the only

Re: [volt-nuts] Fluke 720a self calibration repair

Tony, I'm a US citizen, but I do know that the UK has a 20% VAT on each level of manufacture and/or distribution. That can add up quickly in the end purchase price. Or am I missing something here? No VAT in the USnot yet anyway;-) On Sun, Sep 27, 2015 at 2:15 PM, Tony

Re: [volt-nuts] Fluke 750a batteries.............

Four Tadiran 5955 2/3 AA lithiums have worked fine for me. They come with leads that I just soldered onto the battery holder terminals. Hello All, I posted this over at the HP yahoo group as well, so pardon the redundancy if you belong to both or more. My new to me Fluke 750a reference divider

Re: [volt-nuts] Advise to Junior Member Regarding Acquisition of Fluke 5XXX Series Calibrator

Gentlemen, I concede that: The need for an HP3458a is imperative. The need for a Fluke 5440b or better is imperative. As a minimum, a self constructed Hammon Divider is imperative and will eliminate the need for a 720a to calibrate cardinal points down to the 100mv level. However, with my

Re: [volt-nuts] Junior Member Lost Shirt on 720a KVM Purchase

Excellent point. I will take the actions you advise. Thanks, Stan On Thu, Mar 26, 2015 at 10:22 PM, acb...@gmx.de wrote: the cheapest way I would think (not to mention the time savings) is to sell this as broken and buy another working one. these sometimes sell arround the price of the

[volt-nuts] OCD About My HP419A Attenuator Switch Gold Plated Contacts

Now that I've restored my HP419A to running order for the meantime, I have nagging questions regarding the continuous use of the attenuator switch. The main board of the instrument, A4, was badly polluted with an invisible layer of potassium hydroxide from the 30 years of being in the same box

[volt-nuts] HP419A Temporary Chopper Fix

For those of us who are in need of a temporary fix for our HP419A null meters, with dead neons, here is some good news. At http://dabbledoo.weebly.com/hp419a.html you will find an intriguing circuit that overcomes the need for SOT neons with specific strike and breakdown voltages. I built this

Re: [volt-nuts] HP-419 and Fluke 845 Modifications

Hi Randy, I have a very pedestrian and naive question regarding the fab of the chopper eliminator board for the HP419A. Is it your intention to replace the A4 board with a board containing your new design? If so, you have to keep in mind the A4 board is a whopping .173 thick. Expresspcb seems to

Re: [volt-nuts] HP419A Meter Pegged to Right

That clinches it. Brooke's Tek tour reminded me that I have on file a Service Scope from Tek entitled Washing Your Tektronix Equipment. I can follow those instructions less the drying for 24 hours in an oven at 125F. Doing so will probably have me kicked out of the house by the wife. A hair dryer

Re: [volt-nuts] 732A and Prologix received

As a non-scholar in metrology, I tend to want to simplify the results of an academic debate to make the results of the debate useful to me. One thing is clear from my web search, copper alloyed with Tellurium, or Beryllium, still oxidizes, only at a slower rate. It appears that a big disadvantage

Re: [volt-nuts] What's All This Low Thermal EMF Test Lead Stuff?

for joining a beer nuts group. Todd On Tue, Aug 19, 2014 at 2:07 AM, Stan Katz stan.katz...@gmail.com wrote: I'm a self described volt-nut-near-beer. I don't own a 732A/B, or an HP3458. I do own HP3456 DMMs that are at the top of my instrumentation pecking order. I have all the necessary gear

Re: [volt-nuts] Low Thermal EMF Test Lead Stuff

Recommended pdfs have been downloaded. Lots there. Charles, you're right about the pricey Fluke 2nd ed. I opted to buy this edition used, for a much more reasonable sum. Thank you, Stan On Tue, Aug 19, 2014 at 10:46 PM, Charles Steinmetz csteinm...@yandex.com wrote: Stan wrote: Discussion