[GreenKeys] Loop supplies or selector magnet drivers

[Eric]

I am using the same eBay power supply, and it's been very reliable. (It's even possible I referred this one to the list a while back) It even supplies enough current to run a model 19 tape punch, which is pretty nice.

On October 29, 2018 11:51:46 AM PDT, Jordan Spencer Cunningham <js at cunni.co> wrote:
>Where are you looking for your resistors? I got a bunch I'm using in my
>current loops from a local electronics shop (which has since burned
>down--
>RIP RaElco!) for something like 80 cents or $1.00 each. I know there
>are
>lots of online shops ranging from eBay to DigiKey to Amazon to more
>obscure
>shops that sell these for no more than a couple of dollars each plus
>shipping, especially if you buy in bulk.
>
>Oh, and Jeff just got you some example links.
>
>As for loop power supplies, I'm using something much like this 0-150VDC
>generic power supply unit to drive two loops right now. It can supply a
>ridiculous amount of current, so I could drive many other loops with
>this.
>I plan to power my M19's tape punch with it eventually. Yes, it's from
>China, and I know a lot of people avoid Chinese junk like the plague,
>but I
>took a chance on this one and have been extremely pleased thus far. I
>did
>not open it up to see the quality of components they used. It's been in
>use
>on my M15 and M19 for coming up on a year now without any problems.
>Link:
>https://www.ebay.com/itm/AC100-120V-to-0-150V-DC-Output-Adjustable-500W-Switching-Power-Supply/183491922118
>
>On Mon, Oct 29, 2018 at 11:59 AM W9DDD <w9ddd at tapr.org> wrote:
>
>> Wonder what people are using these days loop supplies and keying the
>> loop or selector magnet directly.  I was thinking of going old school
>> with 120 VDC and a series 2,000 ohm 10 watt resistor. But, looking at
>> the prices for 10 watt resistors, I'm re-thinking things.
>>
>> I might get lucky with something already being in the LESU of the
>> pending 28, but I'm not counting on it.  I'm trying to get setup so
>all
>> I have to do is plug it in when the 28 arrives.
>>
>> --
>> John, W9DDD
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