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using mosfets

Discussion in 'Electronic Design' started by casdsys, Jul 16, 2006.

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  1. casdsys

    casdsys Guest

    Ok I know how to use a transistor to turn a device on and off.
    Could some one show me how you do the same but with using a mosfet.
    I wish to use ttl level logic to turn on a mosfet.

  2. OK who wants to start this time?

  3. S.O.S (same old s**t).
    Your controling driver sends signal to a device which changes its
    resistance. So look at the data sheets and adjust the drive accordingly.

    Have fun

    Slack user from Ulladulla.
  4. PeteS

    PeteS Guest

    What load?

    Most small signal /switching MOSFETS will operate with TTL levels (and
    LVTTL levels), but much depend on the load (of course, it's easy to
    control a larger switch with a small one).

    However, you say you know how to use a transistor (one must assume a
    bipolar) to turn a device on and off. The principle using a FET is much
    the same. I recommend some data sheet reading. (Try the 2N7002 for a


  5. Luhan

    Luhan Guest

    A couple weeks ago, I bought some mosfets - never used them much
    before. I found a use for one running my Dremel tool....

    Now I see why they are so popular!

  6. Phil Allison

    Phil Allison Guest

    ** Groper Alert !!!!!!!!!!

    ** No problemo.....

    Just use a "logic level " mosfet.

    The catalogues are full of them.

    ........ Phil
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