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solderless bread board question

Discussion in 'Electronic Basics' started by Michael Eisenstadt, Jan 19, 2004.

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  1. Is a solderless bread board just as good as
    bread boards which require soldering?

    I have assembled the components for a project
    but as I have never done this before, I need
    to ask some basic questions.

    Thanks in advance for your help.

    Michael Eisenstadt
     
  2. Garrett Mace

    Garrett Mace Guest


    It is fine for prototyping, but not a good idea for a permanent project. The
    connectors can work loose easily over time. Usually you will test the
    circuit on a breadboard to ensure it meets your specifications, then
    transfer it to a solderable breadboard for permanence, or lay out your own
    circuit board.
     
  3. They are not make as low resistance connections as solder, and are
    limited to about an ampere and get lose and degrade after a lot of
    use. They also have more capacitance between adjacent strips and to
    the grounded back plate than you will have with a soldered board.
    But, with a bit of care, you can do quite a lot with them.

    I have breadboarded a 40 pin PIC microprocessor system that took up
    about 100 square inches of PC board area when it was laid out, and the
    breadboard worked just fine. They are a good introduction to noise
    coupling and supply drop.

    Do you have any other specific questions?
     
  4. CFoley1064

    CFoley1064 Guest

    From: Michael Eisenstadt
    Hi, Mike. Like most practical technical issues, "it depends". I feel
    comfortable using them for circuits where you aren't too concerned about small
    capacitances between connections, and you're not running over 1 amp through any
    connection. Also, the contacts themselves can be somewhat resistive,
    especially if you're in the habit of running current too high, or weaken the
    clips underneath by trying to fit heavy gauge wires into the connectors. It's
    usually best to stick with 22AWG or 24AWG wire whenever you can. Also, the
    "ground plane" underneath the breadboard isn't very effective for high
    frequency work.

    In short, keep your highest frequency of interest below a couple of MHz, don't
    use it for circuits where several pF of capacitance between pins is a problem,
    keep the currents low, and use moderate gauge wire. Even when you're using
    these boards, wire layout can be important. Solderless breadboards can save a
    lot of time, and can be really convenient.

    Good luck
    Chris


    Be very aware
     
  5. Earl

    Earl Guest

    what does 22AWG mean. What do the A/W/G stand for. I heard
    people mention these things when needing to constuct an fm coil

    thanks
     
  6. American Wire Gauge.

    --
    We now return you to our normally scheduled programming.

    Take a look at this little cutie! ;-)
    http://home.earthlink.net/~mike.terrell/photos.html

    Michael A. Terrell
    Central Florida
     
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