90 volt DC motor Controllers

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jwax
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90 volt DC motor Controllers

Post by jwax » Sun Apr 27, 2014 7:00 am

Have a few of these from Minarik- Model RG101UC.
120 VAC input. See them on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... _351wt_887

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dacflyer
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Re: 90 volt DC motor Controllers

Post by dacflyer » Sun May 04, 2014 7:26 pm

what did they come out of ? - just curious

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jwax
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Re: 90 volt DC motor Controllers

Post by jwax » Mon May 05, 2014 3:45 am

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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dacflyer
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Re: 90 volt DC motor Controllers

Post by dacflyer » Wed May 07, 2014 10:48 am

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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jwax
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Re: 90 volt DC motor Controllers

Post by jwax » Wed May 07, 2014 1:32 pm

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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dacflyer
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Re: 90 volt DC motor Controllers

Post by dacflyer » Wed May 07, 2014 8:10 pm

cool... sounds like they were the Amorphous type, or thin film technology.

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jwax
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Re: 90 volt DC motor Controllers

Post by jwax » Thu May 08, 2014 3:43 am

Amorphous solar cells are thin film silicon, ours are CIGS: Copper, Indium, Gallium and Selenium.

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dacflyer
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Re: 90 volt DC motor Controllers

Post by dacflyer » Fri May 09, 2014 9:45 am

ya, i got that later on after reading more :)

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Lenp
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Re: 90 volt DC motor Controllers

Post by Lenp » Thu May 15, 2014 5:37 am

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
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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jwax
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Re: 90 volt DC motor Controllers

Post by jwax » Thu May 15, 2014 2:13 pm

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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