[Milsurplus] Re: More Russki Radio...

Unserviceable but Repairable cosmoline at aa4rm.ba-watch.org
Fri Jul 27 07:42:29 EDT 2007


> Don't those things (wall warten) have pretty awful voltage stability under
  load to no load? 

Dunno Hue

But where I've used 'em the load's about constant.  Filaments on
gi 2-ways

Also bet the hum's horrible, but 2-ways stop talking below 300hz

AND, yes the 12V to 115V cheapy inverters are god-awful noise
makers but I thru in the caveat "Powered FM radios only"

Public apology time.  I hurt one set of feelings here.
Hate that I might come off as a smart @$$ sometimes.  If I'm
anything tho, it's a pragmatist

I just tried several inverters & tested to see if they'd 'splode
by connecting one side of output to input.

Ya know if they did, it'd be lawsuit city.

Y'all shud see how those beauts work on a triggered scope.  Switch mode
w. varying pulse count* in each of 4 quadrant-sections of a sine
wave.  Power delivery accurate, wave form amazing.  They're
not ur dad's olds... & how do they get sold here for $20/150w?

Speaking of lawsuits, think they're even polarity (bridge) protected
on input for pos/neg ground cars.  Ninny proof.

  marty aka aa4rm

* pulses added to provide load regulation

  ---> I've a GE ed'n stripped here & will foto & put on web if
       anyONE asks.  'lil xfrmr that passes/isolates all those
       fast pulses jumps right out atcha,


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