Ulrich, Any possibility to get an English version of your "Über die Stabilität von Oszillatoren und Frequenznormalen" article?

All amplifiers amplify signal and noise, plus distort >everything in the process. (fundamental laws of the universe: 1) You >can't get something for nothing, 2) You can't break even, 3) >You'll die trying) Ideally, you want the amplifier at the >antenna and you want the amplification to match the cable loss and >no more.

-John ============= > After all, that transmission line is starting to be a significant > fraction of a wavelength at 60 Hz.

On 11/28/2011 7:32 PM, Alan Melia wrote: > I wouldnt even rely on that..... a coroner in the US recently proclaimed > that the cause of death was "spontaeous human combustion" (again) despite > all the TV programs debunking that old wives tale. > > Alan G3NYK > > > ----- Original Message ----- > From: "Poul-Henning Kamp" > To: "Discussion

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.

I am pretty good with all of those and have > experienced most of them. But then comes the point of the dirty bulb and it > doesn't have to be the blob.

It is not at all uncommon for them to fill up with dust, > overheat, and die. Popping them open every 10 years or so to clean them out is > well worth the effort. > > Bob > >> On Mar 5, 2017, at 8:54 PM, Scott Stobbe wrote: >> >> Recently the fan in my 53131 has been making a pretty awful sound, so its >> time to replace it.

They > may issue the on die reset once and then the supply collapses all the flops > lose their reset state, but the IC dosen't try to reset again. > > Fortunately, you can buy a bunch of LDOs which include a small discharge > FET to help this case as well as others. >

I blame the temperature hysteresis on the die attach to the lead frame which seems to be usually a silver filled epoxy compound. I hope that the hysteresis on a discrete zener is much lower. With best regards Andreas

Mount 8 die to ceramic substrate, mount those to Rogers boards. Thermal wasn't really an issue as everything was bathed in Flourinert™. Was an interesting project. The Unix kernel scheduler had to make scheduling decisions based on all the usual criteria plus how far away the free CPU and/or memory was.