capacitor question

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by kingink, Mar 17, 2004.


  1. kingink

    kingink Gold Supporting Member

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    Hi all,

    I was just checking out a schematic for an AA864 Bassman at Schematic Heaven, and I noticed that the deep switch on the bass channel is wired to a .1 capacitor.

    My question is, .1 picofarad, nanofarad, or microfarad? The schematic doesn't say. Sorry if this is a dumb question.

    Thank you,


    david
     
  2. Fuchsaudio

    Fuchsaudio Member

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    .1 uf (microfarad).
     
  3. kingink

    kingink Gold Supporting Member

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    Thanks, Andy. :D

    So, when reading a schematic, should I assume that all capacitors are microfarad unless otherwise noted?
     
  4. tonezoneonline

    tonezoneonline Member

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    I'm probably going to get my self in a jam here for trying to give a short ,in general,answer but to answer your question .No.
    A micro fard is 1000 pico farads so there is quite a difference.
    In Fender type amps the caps that are pico farads will usually be the ceramic and mica caps(250pf,500pf,47pf).The electrolytic (22@500,47@500)and coupling caps (.01@630,.022@400,.1@600)will be micro farads.
     
  5. kingink

    kingink Gold Supporting Member

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    Thanks, TZO. I guess I have miles to go before I sleep when it comes to understanding this stuff.
     
  6. Jim Collins

    Jim Collins Member

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    1000pF = .001uF, so 1uF = 1000000pF.
     
  7. tonezoneonline

    tonezoneonline Member

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    Yea,I'm having one of those weeks.Maybe this will help.

    Symbol Prefix Multiplication Factor
    M mega one million 10 x 6
    K kilo one thousand 10 x 3
    m milli one thousandth 10 x -3
    u micro one millionth 10 x -6
    n nano one thousand millionth 10 x -9
    p pico one million millionth 10 x -12
     
  8. DRZ400

    DRZ400 Guest

    Unless the schematic is English they like nanofarads watch out for an "n"
     
  9. tonezoneonline

    tonezoneonline Member

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    Yes.I realized I made a mistake and corrected it in my next post that you must have missed.
     

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