Please help me interpret

Discussion in 'Home Theater Projects' started by Josh Varghese, Oct 4, 2003.

  1. Josh Varghese

    Josh Varghese Stunt Coordinator

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    I was looking at the tone control circuit here
    http://xoomer.virgilio.it/fladelle/Page53.htm

    Under the Parts List there are some values I'm having problems interpreting:

    R4,R5___________3K9 1/4W Resistors
    R6,R7___________1K8 1/4W Resistors
    R10___________560R 1/4W Resistor
    R12___________220R 1/4W Resistor

    C3,C5___________4n7 63V Polyester Capacitors
    C7______________4µ7 63V Electrolytic Capacitor

    The #'s after the K's n's and µ's and the letter R are whats throwing me
    off. What are these values? Also this may be a stupid question but in the diagram, is it the V+ power supply pin that is grounded on the op-amp or V-?

    Thanks
    Josh Varghese
    [email protected]
     
  2. ThomasW

    ThomasW Cinematographer

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    What did the designer say when you emailed him with your questions?
     
  3. Patrick Sun

    Patrick Sun Moderator
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    My guess:

    R4,R5___________3K9 1/4W Resistors ==> 3.9K ohms
    R6,R7___________1K8 1/4W Resistors ==> 1.8K ohms
    R10___________560R 1/4W Resistor ==> 560 ohms
    R12___________220R 1/4W Resistor ==> 220 ohms

    C3,C5___________4n7 63V Polyester Capacitors ==> 4.7 nF
    C7______________4µ7 63V Electrolytic Capacitor ==> 4.7 uF


    And the ground for V+ should be V-.
     
  4. Patrick Sun

    Patrick Sun Moderator
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