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Re: gEDA-user: lost newbie
Do I dare ask that we put a cap on this conversation?
Steve M.
Gene Heskett wrote:
>On Friday 06 January 2006 23:52, Dan McMahill wrote:
>
>>>Unforch, the one pair of jumpers I missed on the schematic had left
>>>the vibrator (remember those?) and plate transformer still wired for
>>>6 volts. The radio worked great on 12 volts, until one of the
>>>filter cans made a dent about 1/2" deep in the plaster ceiling. The
>>>kids, trying to get some sleep upstairs, thought I was shooting at
>>>them.
>>>
>>>Messy, took a couple of hours to clean that up. Stinky too.
>>>Probably had over 600 volts on 450 volt rated caps.
>>>
>>funny. In my case it was my parents who thought I was up to no good
>>when I made a very loud bang at 2AM back in high school days. And
>>yes, those caps do stink. Probably nasty stuff for human consumption
>>too.
>>
>
>Sort of, but we know better than to ingest it while your pets think is
>sweet and lap it up, leading to death a goodly portion of the time. The
>stink is the combination of burnt kraft paper used to seperate the
>foils, and the common anti-freeze ethylene glycol's burning byproducts.
>The same stuff you can smell behind an automobile with a cracked head or
>head gasket.
>
>The 'technical grade' of ethylene glycol used in electrolytic caps is
>many times purer than the stuff used in auto radiators though. Back in
>the mid-70's when the petro squeeze was on the first time, antifreeze
>that winter was up into the $13 a gallon area, and I created a
>nationwide semi-shortage of electrolytic caps that winter by running
>down the last barrel of the good stuff in the country (it was only 125
>miles away, on the Mobil warehouses dock in Omaha at the time) and
>buying it for a water cooled tv transmitter which required the pure
>stuff else a pair of $150,000 klystrons could be trashed by the
>internal electralisis the regular stuff would have allowed. It was
>that, or sign off KNXE-TV for the winter. As it was destined for
>another customer, I had to talk fast to get it. As the original
>customer probably had a fixed price contract, they probably welcomed
>the chance to get what the traffic would bear. ISTR the PO I cut in
>NETV's name was for about 850-900 dollars for that 55 gallon drum.
>
>ISTR that barrel was sitting there waiting for shipping orders to
>Sprague, who had a plant in eastern Nebraska at the time. 55 gallons
>of it will make a heck of a lot of electrolytic caps as it only takes a
>few drops to soak the paper sufficiently.
>
>
>>-Dan
>>
>
>