[GreenKeys] Loop power supplies

[eric]

I'm not sure what those are, mine doesn't have any. It just has a single board mounted pot that you turn with a screwdriver. I imagine, being ebay, it's random chance what you actually get.

On March 3, 2018 11:22:37 AM EST, Steve Garrison <steve.n4tty at gmail.com> wrote:
>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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