[GreenKeys] power transformer

[Jordan Spencer Cunningham]

Ah, I didn't quite process this email exchange fully. You're just looking
for a transformer, and a higher voltage than the typical loop voltage at
that. Well, this seller does offer full fledged power supplies in the
voltage range you're looking for, but it's a bit more expensive-- $200-$300
if I recall.

Apologies for not reading the exchange thoroughly and responding. I had
visited those websites mentioned earlier in the thread looking for a power
supply for my teletype current loops earlier this year and never found what
I was looking for. When I saw them mentioned I thought I'd share what I
ended up doing, but now I realize it's not exactly what you were asking.

This is what happens when you multitask at work.

Good luck.

--Jordan

On Mon, Jul 30, 2018 at 11:42 AM, Jordan Spencer Cunningham <js at cunni.co>
wrote:

> Hi Ralph,
>
> I got a 0-150V DC PSU from a Chinese seller on eBay. The quality is pretty
> good in my experience, and they're much less expensive than the few other
> online stores I could find selling anything similar. Heck, even the
> shipping was really fast considering it came from China-- I think it only
> took a week and change for me to get mine. If you don't want to roll your
> own, then this is a great option-- I recommend them. I've had mine in use
> with output adjusted to 120VDC limited to around 60-120ma (depending on
> whether I'm driving one or two loops simultaneously) since about April of
> this year without any problems. You'll have plenty more current at your
> disposal than you need (all of their units seem to run with 3-4+ amps
> output available), but you can drive multiple loops at once if needed and
> could even run a DC reperforator or other DC-powered apparatus.
>
> The seller's name is sheep20110812, and their storefront is here:
> https://www.ebay.com/usr/sheep20110812?_trksid=p2047675.l2559.
>
> This model is more or less like the one I got (they seem to change them
> from time to time, so I don't think this one is exactly the same):
> https://www.ebay.com/itm/NEW-500W-0-150V-DC-Output-
> Adjustable-Switching-Power-Supply-CNC-WITH-CE/173440103288?hash=
> item2861d5f378:g:zNgAAOxy69JTDg-b
>
> Here's a cheaper model that only ranges between 100 and 120VDC:
> https://www.ebay.com/itm/NEW-AC100-120V-to-150V-DC-
> 3-3A-500W-Output-Regulated-Switching-Power-Supply/173423076000?hash=
> item2860d222a0:g:zNgAAOxy69JTDg-b
>
> I know there are a couple other sellers on eBay with similar products, but
> I took a chance with this one and have been pleased thus far.
>
> --Jordan
>
> On Mon, Jul 30, 2018 at 11:20 AM, Jeffrey Angus <jdangus at att.net> wrote:
>
>> On 7/30/18 12:13 PM, Ralph Mowery wrote:
>>
>> There may have been other places that I can not think of that are
>> similar to MPJ.
>>
>>
>> <https://www.allelectronics.com/> <https://www.allelectronics.com/>
>>
>>
>> --
>> "I am a river to my people."
>> Jeff-1.0
>> WA6FWIwww.foxsmercantile.com
>>
>>
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