Hi Bruce, Well, I am glad you are not mad at me.
As you know most humor is fact based and such is the case I made about the humor. I really do not have the in-depth knowledge that I should have when it comes to deciding which "transistor/opamp/comparator" part would be best. Particularly when the discussion starts getting heavy in the finer art of noise and phase disturbances and such. However, I never felt I could NOT approach you with such questions. Hopefully, no one took it otherwise. Bill....WB6BNQ Bruce Griffiths wrote: > Bill > > WB6BNQ wrote: > > Dear Bruce, > > > > I was trying to make a bit of humor, admittedly at your expense, playing on > > "time" and > > "nuts." I would have included the "internet" smilelys, or whatever you > > call them, but > > I do not know them and would not know which to apply at the end of my > > sentences. Such > > would have noted it was not an attack, which truly it was not. > > > > > I've got a fairly thick skin, I often find some humour at my expense > amusing. > > You are not the only one who is cryptic with some of their responses. You > > just happen > > to be the most prolific, on the surface, and the easiest, in this case, to > > poke fun at > > (so to speak). As you so correctly point out, it really does require > > knowing the > > intended purposes and application for a circuit before deciding upon a > > selection of > > parts. > > > > I see you took my attempt at being a comedian in the wrong light, for that > > I apologize. > > > I saw and appreciated the humour, but thought there might perhaps also > be a serious underlying question. > > 73....Bill....WB6BNQ > > > > > > > Bruce > > > Bruce Griffiths wrote: > > > > > >> Bill > >> > >> In general, for frequencies of around 10MHz and below 2N3904's and > >> 2N3906's work well at least for collector currents < 40mA or so. > >> In some circuits these will even work well to around 100MHz albeit with > >> higher noise and distortion. > >> For higher frequencies faster transistors are usually advisable. > >> > >> The choice of comparator depends on what logic it is intended to drive. > >> With logic supplies as low as 1.8V for some FPGAs and CPLDs its > >> difficult to give a part that suits all applications. > >> > >> If in doubt ask (off line if you prefer) and I'll find a part (or parts) > >> that you can easily obtain that suits your particular application. > >> > >> Bruce > >> > >> WB6BNQ wrote: > >> > >>> Jim, > >>> > >>> I totally disagree ! The "crystal orientations" thread has been most > >>> informative, particularly with regard to the link showing the internals > >>> of the hp > >>> oscillator. A short section of the "plumbing" was helpful, although it > >>> got a bit > >>> out of hand. > >>> > >>> I think the point of the "Timenuts" list is to provide a medium for > >>> discussion of > >>> topics that help people improve their efforts at achieving higher > >>> precision in > >>> all facets of time keeping. All of the list members are not on the same > >>> level > >>> whether it is education, technical or even monetary ability. Thus, many > >>> are here > >>> for learning and to prevent poor choices and expensive mistakes from > >>> others that > >>> have gone before them. > >>> > >>> If you want to complain about something, then jump on Bruce for never > >>> suggesting > >>> what "transistor/opamp/comparator" part number would be most appropriate > >>> for his > >>> circuits. I go "nuts" time and time again over that small point because > >>> I do not > >>> have enough in-depth knowledge to fully make the appropriate choices. > >>> Hmmmm, > >>> maybe that is why it is called "Timenuts" list ? A place for Bruce to > >>> drive you > >>> "nuts" time and time again. > >>> > >>> Who would have thought ? > >>> > >>> Bill....WB6BNQ > >>> > >>> > >>> The point being that > >>> > >>> Jim Palfreyman wrote: > >>> > >>> > >>> > >>>> All, > >>>> > >>>> Can you please follow John's instructions and stay on topic. > >>>> > >>>> All this new age pseudo-science talk of "crystal orientations" and "g > >>>> sensitivity" does not belong in this group. > >>>> > >>>> Thank you. > >>>> > >>>> Jim > >>>> > >>>> 2009/7/9 Robert Atkinson <[email protected]> > >>>> > >>>> > >>>> > >>>>> Hi Antonio, > >>>>> Have a look at http://www.realhamradio.com/GPS-oven-journey.htm for > >>>>> internal pictures. > >>>>> The crystal element is a disc mounted parallel to the flat end of the > >>>>> can, > >>>>> see http://www.bliley.com/index_088.htm > >>>>> > >>>>> Robert G8RPI. > >>>>> > >>>>> --- On Wed, 8/7/09, [email protected] <[email protected]> wrote: > >>>>> > >>>>> > >>>>> > >>>>>> From: [email protected] <[email protected]> > >>>>>> Subject: Re: [time-nuts] 10811 crystal orientation > >>>>>> To: "time-nuts" <[email protected]> > >>>>>> Date: Wednesday, 8 July, 2009, 7:01 PM > >>>>>> Hi Chad, > >>>>>> > >>>>>> the sketch you sent seems to indirectly answer my question, > >>>>>> as I could rely on the axis of minimum "g" sensitivity to > >>>>>> orient my three 10811 assemblies, but for my purpose it > >>>>>> seems that there is still a margin of ambiguity. I don't > >>>>>> take from the sketch how the crystal is actually fitted > >>>>>> (vertically?) into the case. As far as I know, "g" > >>>>>> sensitivity depends mainly on how the crystal "weights" on > >>>>>> its suspensions (contacts), and this is secondary for me. > >>>>>> So, I would be pleased to know how the crystal is actually > >>>>>> oriented, say regardless of the "g" sensitivity. > >>>>>> > >>>>>> Thanks. > >>>>>> Antonio I8IOV > >>>>>> > >>>>>> > >>>>>> > >>>>>>> Hi Antonio, > >>>>>>> > >>>>>>> Please see the attached diagram from the 10811A > >>>>>>> > >>>>>>> > >>>>>> service manual. Minimum and > >>>>>> > >>>>>> > >>>>>>> maximum G-sensitivity axes are shown. Since the > >>>>>>> > >>>>>>> > >>>>>> other variants of 10811 are > >>>>>> > >>>>>> > >>>>>>> all internally constructed the same, I would not > >>>>>>> > >>>>>>> > >>>>>> expect a difference for the > >>>>>> > >>>>>> > >>>>>>> -60111. > >>>>>>> > >>>>>>> - Chad. > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> On Wed, Jul 8, 2009 at 10:27 AM, [email protected] > >>>>>>> > >>>>>>> > >>>>>> <[email protected]> > >>>>>> wrote: > >>>>>> > >>>>>> > >>>>>>>> Dear all, > >>>>>>>> > >>>>>>>> does anybody out there know the orientation of > >>>>>>>> > >>>>>>>> > >>>>>> the crystal faces relative > >>>>>> > >>>>>> > >>>>>>>> to the outer case in a 10811-60111? > >>>>>>>> > >>>>>>>> (The sense of the question is that we are > >>>>>>>> > >>>>>>>> > >>>>>> considering building a 3-axis > >>>>>> > >>>>>> > >>>>>>>> apparatus for gravity-related tests. Note, based > >>>>>>>> > >>>>>>>> > >>>>>> on our tentative > >>>>>> > >>>>>> > >>>>>>>> modelization, crystals are not requested to work > >>>>>>>> > >>>>>>>> > >>>>>> as accelerometers). > >>>>>> > >>>>>> > >>>>>>>> Antonio I8IOV > >>>>>>>> > >>>>>>>> > >>>>>> _______________________________________________ > >>>>>> time-nuts mailing list -- [email protected] > >>>>>> To unsubscribe, go to > >>>>>> > >>>>>> > >>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>> > >>>>> > >>>>>> and follow the instructions there. > >>>>>> > >>>>>> > >>>>>> > >>>>> _______________________________________________ > >>>>> time-nuts mailing list -- [email protected] > >>>>> To unsubscribe, go to > >>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>> and follow the instructions there. > >>>>> > >>>>> > >>>>> > >>>> _______________________________________________ > >>>> time-nuts mailing list -- [email protected] > >>>> To unsubscribe, go to > >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>> and follow the instructions there. > >>>> > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- [email protected] > >>> To unsubscribe, go to > >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >>> > >>> > >>> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
