[GreenKeys] Looking for components to build loop supply

[John D. Kopke]

> Yeah, I know this is easy . A 150 v dc xfmr, resistor and a rheostat.I could use 
>just the components to build one if any one has them laying around or leads on 
>where to get them. I am trying to build an RS-232 converter for the "Tempest" 
>Dovetron. I've been looking through the mouser catolog but start to go cross-eyed 
>after page 50! Thanks in advance for any help. Best to all 
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