Robert I can't believe you found the transistor. When I pulled it out last night, its actually a MPSA18!!! I had not had time to look it up but figured it was a ebay leftover hunt. :-) At that price I may order 20 of them. Like the gain. Thanks.
On Thu, Jul 25, 2013 at 9:28 AM, Robert LaJeunesse < rlajeune...@sbcglobal.net> wrote: > FYI, The MPSA18RLRAG is a stock item at Digi-Key, min beta 500 at 1 & > 10mA, 45V & 200mA rated, TO-92. $0.33 each. > > > http://www.digikey.com/product-detail/en/MPSA18RLRAG/MPSA18RLRAGOSCT-ND/1139919 > > > > > >________________________________ > > From: paul swed <paulsw...@gmail.com> > >To: Discussion of precise time and frequency measurement < > time-nuts@febo.com> > >Sent: Wednesday, July 24, 2013 9:29 PM > >Subject: Re: [time-nuts] HP 10811 update > > > > > >Well learned quite a bit Q4 does have an issue. Further there is a reason > >it has such high Beta. Its must deliver 30 ma to the oscillator and > buffer. > >I was quite surprised by this current level. I was guessing the > oscillator > >was a few mils and the buffer maybe 8. > >The 2n3904 simply does not cut it. Need to do some digging in the ole > >transistors. > >Regards > >Paul. > > > > > > > _______________________________________________ > 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.