Hi Anything that causes “delta C” between the leads is probably a bad idea. Most 3D printing materials are relatively unstable as capacitor dielectrics.
Bob > On Feb 2, 2016, at 10:51 AM, Daniel Watson <watsondani...@gmail.com> wrote: > > Hi, > > I have added a picture of the bottom of the 5 MHz crystal. The other one > has a similar pin arrangement, two pairs twisted and soldered together, > except they aren't cut as short. The seller indicated they were > manufactured in Russia for military use. > > If a suitable socket cannot be found, I thought about 3D printing little > stands for them to sit on when soldered to a board. > > Dan > > On Tue, Feb 2, 2016 at 6:54 AM, Tim Shoppa <tsho...@gmail.com> wrote: > >> Interesting! Date code from the 90's? Russian, right? >> >> They certainly look like common 7 pin miniature tube pattern. >> >> But unlike a real 7 pin tube that actually has stiff Cunife or Fernico >> pins, it looks like you have just tinned wires out the bottom of yours, and >> your pics don't show the bottom of the tube, but it looks like outside the >> glass the wires from two different pin-holes are wrapped together? >> >> For testing purposes I don't see any problem using a 7-pin miniature tube >> socket if you have it on hand and carefully inserting the pairs of twisted >> wires into the socket holes. >> >> But for more permanent use seems to make more sense to solder the pins to a >> PCB if they are tinned already. >> >> Tim N3QE >> >> On Mon, Feb 1, 2016 at 9:58 PM, Daniel Watson <watsondani...@gmail.com> >> wrote: >> >>> Hi, >>> >>> I purchased a pair of interesting glass envelope crystals for a project. >>> Here are some pictures: >>> >>> >> http://syncchannel.blogspot.com/2016/02/glass-envelope-quartz-crystals.html >>> >>> Does anyone have an idea about what mount/socket I should buy for these? >> I >>> read a previous thread on the list about Bliley crystals using a B7G >> mount, >>> but I'm not sure if that type might work here. >>> >>> Also, when building up a circuit to make these oscillate, are there any >>> specific differences about crystals in this package that I should keep in >>> mind? >>> >>> >>> Thanks much, >>> >>> Dan W. >>> _______________________________________________ >>> 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 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 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 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.