Recent content by jimminy12

  1. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    Wow, I forgot all about this one! But, I still have the stupid thing, I can't throw it away, it looks too useful and cool.
  2. J

    Calculating load requirement for light rail

    Thanks for the reply. I think the Pavg is going to be my best bet to go about calculating what I need to know. If I run the calculation using an 8,000 lb train at an average speed of 60 mph for 1 minute, it reveals 3 things: 1. I get Pavg=14,400,000 (Watts?) 2. 1,800 Watts per lb...
  3. J

    Calculating load requirement for light rail

    Hi all, my first post here so first, I'll say hello. Hello. My question is this. I'm trying to figure out how to go about getting an approximate power requirement for an expanding light rail design. The idea is to figure out what it takes to propel a single self propelled train car based...
  4. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    HA! No wonder I couldn't get this thing going. I just figured it was toasted. I looked at the board and saw something that looked like some damage on the printed copper itself, soldered a couple bridges in there. Hooked it up to a laptop power supply I found and BINGO! Nothing. I figured...
  5. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    Hmmm. I'll give that a try. I think it was working, though it had been set aside for a long time.
  6. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    Well, it sort of worked. It has an on-off switch. If it was plugged into the 16v while switched off, I could then turn it on, and it would work fine for a second or 2, then start to distort for a second or two and then would seem to turn off or be dead. I could turn it off with its switch...
  7. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    Yeah, I saw the pdf thing, but not the replacement. But I really don't want to spend any money on a manual that probably doesn't have the info I need, it isn't the service manual. And the replacement, if they can even get it is going to be at least 50 bucks. I doubt the mixer is worth much...
  8. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    Thanks for the welcome. The device is a Boss BX-8 stereo mixer, but I can't seem to locate a data sheet for you anywhere online and don't have the manual. I actually tried the laptop power supply idea, but all I had around was a 16v and it worked for a second, then petered out, I suppose as...
  9. J

    Creating a Custom 21.5V AC Adaptor: Tips and Tricks for DIY Enthusiasts

    I have a device that requires an AC adaptor rated at 120V AC input, with 21.5V, 300mA DC output. Seems this is a bit unconventional as I can't find anything like this anywhere, and I'm wondering if there's a way to make one. I was thinking that I might somehow combine a couple 12V adaptors...
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