Re: [time-nuts] Finding precision resistors, tip
Dr. Frank Stellmach wrote: I've also got a huge collection of TK 1 precision resistors from defect Fluke and HP / dy standards.. Great for building volt-standards as precision references, dividers, and also well-aged standard-resistors. Got several from the 1960s. AThey show absolutely no ageing any more, (I suppose). On the search for new wirewound resistors, I found the 'econistors' at UK, Rhopointcomponents.com. They also deliver TK 0.3 metal foil type FLCY, all for convenient prices. Vishay - with some 'relationship' - delivered to me a small volume of Z201 - great ones, but budget consuming. Frank Stellmach ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. I bought some from Vishay to build the LTZ1000 voltage reference - It cost about US $230 to get the five resistors specified by Linear Technology. And I have not got around to building it yet...I got to design a PC board to complete it. Brian Kirby - KD4FM ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Finding precision resistors, tip
I've also got a huge collection of TK 1 precision resistors from defect Fluke and HP / dy standards.. Great for building volt-standards as precision references, dividers, and also well-aged standard-resistors. Got several from the 1960s. AThey show absolutely no ageing any more, (I suppose). On the search for new wirewound resistors, I found the 'econistors' at UK, Rhopointcomponents.com. They also deliver TK 0.3 metal foil type FLCY, all for convenient prices. Vishay - with some 'relationship' - delivered to me a small volume of Z201 - great ones, but budget consuming. Frank Stellmach ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] Finding precision resistors, tip
One of my methods of finding precision resistors and parts is looking at old test equipment at hamfest. An Fluke differential voltmeter, usually has a Kelvin-Varley precision divider assembly in it that is made out of precision resistors. If the instrument is inop, its usually very cheap to acquire and a great salvage candidate. Why your at it, salvage the reference diodes and note there is usually some markings near them that denoted the current that was applied to the diodes, and sometimes the reference voltage. Brian - KD4FM ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
