1. CircuitSurfer

    Thread Starter New Member

    Sep 19, 2009
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    I have these parts but not sure what they are. Can someone help me ID them? Thanks.
     
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  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    I would guess inductors, but I'm not sure about reading the dots. If a meter shows 0 ohms between the leads, that is probably what they are.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    If the dots are blue-red-brown, I think they'll be 620uH or 620nH.
    If blue-black-brown, that's 600uH or 600nH.
     
  4. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    I am going to add my vote to those that have identified the mystery components as inductors. They don't appear to show any indication of a polarity so they are not likely to be capacitors.

    A quick measure with an ohmeter would help confirm the guess.

    hgmjr
     
  5. CircuitSurfer

    Thread Starter New Member

    Sep 19, 2009
    21
    0
    Thanks for your replies. Maybe I can use them to build an audio filter.
    As a side note can someone check that I'm using the correct ceramic capacitors


    103Z = 0.01 uF

    102 = 0.001 uF
    2KV

    472Z = 0.0047 uF which would be approx 0.05 uF
    2KV
     
  6. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    I think you meant to write 0.005 uF.

    hgmjr
     
  7. CircuitSurfer

    Thread Starter New Member

    Sep 19, 2009
    21
    0
    yes I meant 0.005. I have the 0.0047 and will substitute it for the 0.005 one.
     
  8. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    You could use the inductors in the two transistor version of the "joule thief".

    See this link for circuit details.

    Here is a better link containing a schematic.

    hgmjr
     
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