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Help with identifying vintage resistor value

Discussion in 'Troubleshooting and Repair' started by snapman, Dec 25, 2013.

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  1. snapman

    snapman

    7
    0
    Apr 2, 2013
    Any help greatly appreciated, and a Merry Christmas and Happy New Year to all.

    Douglas


    Am I correct with 4.73 ohms 2%.

    Thank you
     

    Attached Files:

    Last edited: Dec 25, 2013
  2. snapman

    snapman

    7
    0
    Apr 2, 2013
    Am I correct with 4.73 ohms 2%
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,361
    2,756
    Jan 21, 2010
    given its age, i would say 47k 10%

    473 is not a preferred value even for E192
     
  4. snapman

    snapman

    7
    0
    Apr 2, 2013
    more help requested

    What formula is used to read these values
     

    Attached Files:

  5. tech56

    tech56

    1
    0
    Dec 25, 2013
    picture 1: 61 ohm
    picture 2: 1K ohm 10%
    picture 3: 4.7M ohm 20%
    resistor color code:
    first band=first number
    second band=second number
    third band=multiplier
    black 0
    brown 1
    red 2
    orange 3
    yellow 4
    green 5
    blue 6
    violet 7
    gray 8
    white 9
    fourth band:
    gold 5%
    silver 10%
    no band 20%
     
  6. davenn

    davenn Moderator

    13,557
    1,854
    Sep 5, 2009
    the first 2 images show old carbon resistors

    image 1) - 68 Ohm 10% tol.
    image 2) - 1000 Ohms ( 1k Ohm) 10% tol.


    the 3rd image shows 2 carbon resistors and a disc ceramic capacitor

    top resistor 4.7 M Ohms ( 4,700,000 Ohms )
    then 0.005uF disc ceramic cap
    lower resistor appears to be a 150,000 Ohm (150k Ohm) 10 % tol but there is also a red band out to the right
    not sure what that is indicating


    Dave
     
    Last edited: Dec 25, 2013
  7. KJ6EAD

    KJ6EAD

    1,114
    157
    Aug 13, 2011
    That last band is either a reliability/failure rating or a temperature rating. I can't find the reference right now.
     
  8. snapman

    snapman

    7
    0
    Apr 2, 2013
    Thank you.

    The item in my first posting is a

    Sprague Bumble Bee Capacitor

    I haven't had chance to check color values yet, but I am positive that one is a cap.

    o, and I just bought the PACKARD-BELL 531 RADIO PHOTOFACT
    Contains schematic and full parts list. I found one on net, but bad quality image. This is not a copy so should be able to read it

    Sorry for cap lletters, was cut n paist.
    Again thank you to everybody and have a Merry Christmas and a Happy New Year. got about an hour before dinner I guess I'll start to write down values of components.
     
    Last edited: Dec 26, 2013
  9. Thedarkb

    Thedarkb

    17
    0
    Sep 7, 2013
    Just attatch a multimeter and set it to ohms
     
  10. Antony

    Antony

    2
    0
    Nov 26, 2013
    them color codes are basic numbers..takes me back lol..
     
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