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Help with power resistor markings & value?

Discussion in 'Electronic Basics' started by DaveC, Aug 21, 2004.

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  1. DaveC

    DaveC Guest

    Rectangular ceramic power resistor in a Braun handheld blender (120 vac) is
    open.

    Markings on resistor are:
    206-8 R
    R47 10% *

    (That's 10 percent followed by a dot, in case the
    symbol doesn't show up right on your computer...)

    I did a Google on resistor markings and values, but got just traditional
    color codes, etc. The markings on this resistor are Euro designations, I
    presume.

    What's the value of this resistor?

    URL for future ref would be appreciated.

    Thanks,
    --
    Please, no "Go Google this" replies. I wouldn't
    ask a question here if I hadn't done that already.

    DaveC

    This is an invalid return address
    Please reply in the news group
     
  2. R47 is almost certainly 47 ohms. Don't know how many watts, but match the
    physical size of it and you'll come close.
     
  3. Most certainly 0.47 ohms.

    47000000 -> 47M
    47000 -> 47k
    47 -> 47R
    4.7 -> 4R7
    0.47 -> R47
     
  4. Ah! Of course! The R for the decimal point. Thanks.
     
  5. Dan Rae

    Dan Rae Guest

    47R certainly would be 47 Ohms. In the Euro style the R indicates the
    position of the decimal point, so R47 would more likely be 0.47 Ohms, in
    my humble opinion...
    dr
     
  6. El Meda

    El Meda Guest

    The "R" is used sometimes as a decimal point (4R7 = 4.7 ohms) so R47
    could be 0.47 ohms. Buy both, try first the one of 47 ohms.
     
  7. You are correct, we use 0R47 on our own schematics to reinforce the point, but
    R47 will be 0.47 ohms.

    Peter
     
  8. DaveC

    DaveC Guest

    Thank you, Peter, and all others. I'm on my way to buy a 0.47-ohm, 5W
    replacement.

    Thanks again,
    --
    Please, no "Go Google this" replies. I wouldn't
    ask a question here if I hadn't done that already.

    DaveC

    This is an invalid return address
    Please reply in the news group
     
  9. If that is the square ceramic cased types, they are a little bulky, but are
    slightly higher rated in W than equivalent wirewounds. The standard Vitreous
    enamelled 3W and 6W types are a close replacement as long as you don't need the
    slightly higher dissipation. The also do a solderable spike for them to allow
    vertical mounting with support, which can be useful to keep the heat off the
    PCB.

    Peter
     
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