Amongst them was the fact that, on average, THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR TONGUES IN THE UK. I recently joined St John Ambulance as a volunteer and I would much rather not have to use my CPR skills on a fellow Time Nut. Please always think safety first.

Practically speaking 20kRad is a fairly decent dose (it's a typical design requirement for a trip to Mars or for GEO).. you pick up about a kRad/year In LEO it's a lot lower (otherwise astronauts in ISS would die). Around Jupiter it's a lot higher (typical design requirements for Europa missions and such are 1 MRad)

PAL's and other >> unobtainable 'field programmables' appear to die faster than anything >> else in that boxes. Finally, I needed three of them to get one >> working unit...) >> >> Adrian >> > Tried that as well, how does one get a log y scale on the cross > spectrum plot? > > Bruce With Sigview?

PAL's and other >>> unobtainable 'field programmables' appear to die faster than >>> anything else in that boxes. Finally, I needed three of them to get >>> one working unit...) >>> >>> Adrian >>> >> Tried that as well, how does one get a log y scale on the cross >> spectrum plot? >> >> Bruce > > With Sigview?

. > Is my oven controller dieing? I did a reacquire satellites abt 10 days > ago - no difference. > See plot below of the last ~36 days. Any thing to try - restart from cold, > etc ??? > George > >

." > > > If it gets cold enough (without power from solar cells, it won't generate enough internal heat to keep warm), it will die. That's probably what happened to Spirit on Mars.

The next issue might be that they only have them in die form. The issue after that probably is that you really want the version 3 (or 9) chips that actually work with all the modulation schemes. I’ve been down the road with a number of similar chips that took *many* rev’s before they really did what they were intended to do.

Hi Tearing the physics package apart and putting it back together again can be a bit of a hassle on the small Rb’s … Bob > On Nov 21, 2014, at 2:00 PM, paul swed wrote: > > Bob > Absolutely lots of ways to die. Such as bad caps, bad variable cap, > resistors that are cooked.....

. > > Of course it is difficult to provide a good reference and pass transistor > on the same die, but it was worth asking. > > > Bert, > > The thought of temp control of the regulators crossed my mind. Not > planning on going there unless I need to.

We changed the die coat on the ASIC to an opaque version soon after that … Light does indeed interact with semiconductors. It happens even on circuits that you would not *think* are photo sensitive. Physics is nasty that way ….