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 Post subject: 90 volt DC motor Controllers
PostPosted: Sun Apr 27, 2014 6:00 am 
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Joined: Mon Feb 09, 2004 1:01 am
Posts: 2132
Location: NY
Have a few of these from Minarik- Model RG101UC.
120 VAC input. See them on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=151284799450&ssPageName=STRK:MESE:IT#ht_351wt_887


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Sun May 04, 2014 6:26 pm 
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Joined: Fri Feb 08, 2002 1:01 am
Posts: 4250
Location: USA / North Carolina / Fayetteville
what did they come out of ? - just curious


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Mon May 05, 2014 2:45 am 
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Joined: Mon Feb 09, 2004 1:01 am
Posts: 2132
Location: NY
Hi dacflyer,
They came out of a thin film sputtering machine, made to move plates of metal through a processing chamber. Big sucker- about 30 feet long. It was "decommissioned" (scrapped) for the stainless steel.
John


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Wed May 07, 2014 9:48 am 
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Joined: Fri Feb 08, 2002 1:01 am
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Location: USA / North Carolina / Fayetteville
gotchya...BTW what is a film sputtering machine ?

only thing i know about sputtering is old engines and black deposits from lights, like neon , fluorescents and other such items..


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Wed May 07, 2014 12:32 pm 
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Joined: Mon Feb 09, 2004 1:01 am
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Location: NY
Ya- I had an old Chevy that was prone to sputtering too! :)

Thin Film sputtering is a process to deposit thin, very controllable films of materials unto a substrate.
http://en.wikipedia.org/wiki/Sputtering
We were depositing Copper, Indium and Gallium on sheets of glass to make solar panels.


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Wed May 07, 2014 7:10 pm 
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Joined: Fri Feb 08, 2002 1:01 am
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Location: USA / North Carolina / Fayetteville
cool... sounds like they were the Amorphous type, or thin film technology.


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Thu May 08, 2014 2:43 am 
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Joined: Mon Feb 09, 2004 1:01 am
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Location: NY
Amorphous solar cells are thin film silicon, ours are CIGS: Copper, Indium, Gallium and Selenium.


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Fri May 09, 2014 8:45 am 
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Joined: Fri Feb 08, 2002 1:01 am
Posts: 4250
Location: USA / North Carolina / Fayetteville
ya, i got that later on after reading more :)


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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Thu May 15, 2014 4:37 am 
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Joined: Thu Oct 26, 2006 7:11 pm
Posts: 1293
Location: Maryland
Just a jump in here...
I saw selenium mentioned and remembered that many years ago, if a selenium rectifier was dissembled, the paint was stripped and contact was made to both sides of a plate you had a primitive solar cell. Guess i'm just a bit surprised it took so long to get from there to here with the technology!
Len



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Len

“To invent, you need a good imagination and a big pile of junk.” (T. Edison)
"I must be on the way to success since I already have the junk". (Me)
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 Post subject: Re: 90 volt DC motor Controllers
PostPosted: Thu May 15, 2014 1:13 pm 
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Joined: Mon Feb 09, 2004 1:01 am
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Location: NY
Yes, there are many combinations of materials that exhibit the photoelectric effect, besides selenium. The tricky bit is to get enough conversion efficiency to make building it worthwhile.


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