[GreenKeys] Loop power supplies

[Steve Garrison]

If you look through the pics on this item there are two pictures that show
an adjustment knob on the right.  The other pics only show an adjustment
knob on the left.  Is the right knob to adjust current and which model do
you really get if you order this.  Not planning on getting one myself, but
anyone that is might want to clarify with seller.

Steve G./N4TTY

-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of epvgk at limpoc.com
Sent: Saturday, March 3, 2018 9:35 AM
To: Jordan Spencer Cunningham <js at cunni.co>
Cc: Green Keys <greenkeys at mailman.qth.net>
Subject: Re: [GreenKeys] Loop power supplies

I use a generic ebay one like this:
https://www.ebay.com/sch/i.html?_nkw=112632873298

Mine will adjust considerably higher than 120vdc, and puts out enough
current to run a couple of loops and the M19 tape punch at the same time. 


On Sat, Mar 03, 2018 at 01:51:39AM -0700, Jordan Spencer Cunningham wrote:
> For those of you who have aftermarket ~120-150v DC power supplies for 
> your loops, can you share where you got them? If something is 
> commercially available at a reasonable price, I will elect that route, 
> but I'm still interested in custom designs. I've read of a very simple 
> one I may try if nothing else.
> 
> I have an original 20ma loop power supply built into my Model 19 
> table, but I'd like to get more compact versions for mobility's sake. 
> Plus I'd like to be able to operate more than one loop at a time.
> 
> I've been doing research on regulated supplies from parts stores like 
> DigiKey, Jameco, and Mouser, but there's unfortunately not much that 
> meets the necessary criteria that I've been able to find. Acopian 
> makes more obscurely voltaged supplies like this, but not for less than
$200.
> 
> Thanks much.
> 
> --Jordan

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