Explanation NEEDED

Discussion in 'The Projects Forum' started by edwinlipton@peoplepc.com, Jul 29, 2008.

  1. edwinlipton@peoplepc.com

    Thread Starter New Member

    Jul 13, 2008
    Can anyone tell mebecause I am DUMB to this new intrest of mine and to old a dog to be taught in school,,, what is the definition of a MOSFET, a REGULATOR and why are there diode rectifiers and those three legged 1/2 in sqaure dealy-bobs w/small hole on tang to mount to a heatsink,,,,,,? And then those little dealy-bobs w/ mounting tang, how do you test um to see if you blew one I have a bunch of those with different numbers on um and I can't figure um out. right now I am building a COSM and it takes a 7805. I built it on a bread board first and everything WORKED! Great I thought so I tried to put it on a circut bord from radio shack and dcid something wrong in my buliding the circut or I crossed up a hook-up wire or something cause it don't work no-more. THE BLINKY'S don't blink. And I have re-looked over my circuit nothing wrong so it's some componet. I wish I understood what those things are and the difference, WHY re-name it if so or what it is
  2. Ron H

    AAC Fanatic!

    Apr 14, 2005
    I think you should lay off the coffee for a couple of days, and then restate your questions, one or two at a time.
  3. thingmaker3

    Retired Moderator

    May 16, 2005
    I disagree on both counts.
    "Metal Oxide Semiconductor Field Effects Transistor" http://en.wikipedia.org/wiki/MOSFET
    Keeps either voltage or current (pick one) at a pre-determined level. You know... regular. Like prunes, but for electrons instead of for curmudgeons. http://www.techlearner.com/Apps/basregulators.pdf
    Helps keep the magic smoke inside where it belongs instead of floating around the ceiling where your wife can see it. http://whites.sdsmt.edu/classes/ee322/class_notes/322Lecture4.pdf
    Depends... which ones have you got?
    Dude! You can actually read the numbers? Your eyes are better than mine!
    Dang. Must've hooked it up wrong, yeah?
    Oh. Okay. Just replace the bad component.:)
    Oh! That. That part's easy... just work your way through this: http://www.allaboutcircuits.com/l_sitemap.html