[time-nuts] Brandywine GPS4 Kode Displays For Sale

2010-07-19 Thread Jason Rabel
Hey Guys, I hate to spam the list like this since I haven't posted anything in a long time, but I know you're a good group of people. Times are tough and it's time for me to sell off some items that I don't really use or need. I would rather have these items find a good home and just break

Re: [time-nuts] PICTIC II parts from Mouser in da house!

2010-07-19 Thread Robert Darlington
All of the PICs I ordered came in on Friday (Mouser ships FAST!) so it's a matter of programming them and getting them out this week. Just an FYI guys, I'm leaving for southern Arizona for three weeks for work. If I don't get them out this week I will do my very best to get them out while I'm on

[time-nuts] PICTIC II Parts from Mouser

2010-07-19 Thread Ed Palmer
Here we go again! The TS272ACN has just gone 'non-stocked' at Mouser. Will the TS272CN degrade the performance? It looks like the difference between the two is the TS272CN has a higher input offset voltage. Ed ___ time-nuts mailing list --

Re: [time-nuts] PICTIC II Parts from Mouser

2010-07-19 Thread Richard H McCorkle
The TS272CN is an acceptable substitute for the TS272ACN in the PICTIC II but as noted has a higher input offset voltage. This can be compensated for in the second stage by adjustment of the offset trimmer. I selected premium parts for temperature stability in the application. Sorry the

Re: [time-nuts] surface mount (was PICTIC II Parts from Mouser)

2010-07-19 Thread Robert J Marinelli
Hi Richard, Yes, used to feel that way - until acquiring a surplus dissecting (stereo) microscope, now I actually *prefer* surface mount. Much easier to move parts around, it's easy to apply paste solder entire boards in a $50 toaster oven, and access to all the latest parts. Hard to

Re: [time-nuts] surface mount (was PICTIC II Parts from Mouser)

2010-07-19 Thread Bob Bownes
Not to mention not having to drill holes anymore. I built a 15Ghz prescaler over the weekend. Total time from concept to completed (and operational!) prototype was 2 hours. No muss, no fuss, just design the circuit, print out the toner transfer, paste it onto the board, etch, apply paste parts,

Re: [time-nuts] surface mount (was PICTIC II Parts from Mouser)

2010-07-19 Thread Bob Bownes
A few short videos shot with the camera/usb video capture setup I mentioned earlier: http://www.fastbobs.com/bob/radio/video1.mpg Video 1 - Black White inspection of a prototype power sensor. Low magnification http://www.fastbobs.com/bob/radio/video2.mpg Video 2 - Colour inspection of same

[time-nuts] Lab Test Equipment

2010-07-19 Thread Heathkid
Hello. I'm new to this list but have 3 Rb standards and am looking at measuring time (or drift between them). What is the most important piece of NIST calibrated test equipment I need to own? Is 3 enough using two Rb standards as a reference/control group (considering the 3rd can vote before