Hi If you are going to match, do it for speed on the transistors and switching diodes. Once that is done do the Vbe stuff.
Bob On Aug 14, 2010, at 11:43 AM, "Heathkid" <[email protected]> wrote: > Okay Stanley... I've got a Tektronix 370A curve tracer at work. So the > diodes need to be matched? No problem. > > So I match the diodes and the resistors to within 0.001%. Are there any > other components that need matched? Also, you mentioned using hemostats as > heatsinks on the diodes while installing them. I know that diodes make very > good temperature sensors as well. Are there any suggestions on keeping them > stable after they are on the board? What is the recommended operating > temperature of the PICTIC II? > > Thanks. > > 73 Brice KA8MAV > > ----- Original Message ----- From: "Stanley Reynolds" > <[email protected]> > To: "Discussion of precise time and frequency measurement" > <[email protected]> > Sent: Saturday, August 14, 2010 10:43 AM > Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?- > Heathkid > > > <snip> > > Maybe we should buy lots of diodes to match them, they are relative cheap, > also > use extra care installing them. Using hemostats as heat sinks and just enough > heat for a good connection do not want to damage/change them after the match. > > Stanley > > _______________________________________________ > 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.
