Harmonic Exciter circuit help!!

Discussion in 'The Projects Forum' started by KRT87, Mar 22, 2011.

  1. KRT87

    Thread Starter New Member

    Mar 22, 2011
    4
    0
    I'm building a harmonic exciter (see attachment) as one of my uni projects and found a nice circuit diagram online for a Aphex Aural Exciter type B (essentially generates additional harmonic content to audio which improves clarity etc) that I want to build. Problem is there are bits on the diagram that's confusing me :confused: so any clarifications will be very helpful indeed.

    My main confusion is with the two numbers next to the LM13700 chip pins (labeled 1/2 U303 on diagram). Do these mean both these pins are connected together OR I use just one of the pins? For example pins (5,12) & (7,10) are shown connected together to a resistor (51K) then to ground, can this be right?
    I'm encountering the same problem with the other chip sets (TL072, labeled 1/2 U101~3)

    Any help on this matter will be greatly appreciated!!
     
    Last edited: Mar 22, 2011
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    A link or the actual schematic would be helpful.
     
  3. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    CRAP! I forgot my "hidden attachment viewing glasses" in my other pants.

    ;)
     
  4. KRT87

    Thread Starter New Member

    Mar 22, 2011
    4
    0
    Crap why didn't the attachment show? oh well... I reposted the attachment on original post
     
  5. KRT87

    Thread Starter New Member

    Mar 22, 2011
    4
    0
    Reposted with "visible" attachment!
     
  6. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,766
    928
    The use of the 1/2 or 1/3 or 1/6 sometimes

    usually indicates that the IC package contains 2 or 3 or 6 or the logic types shown. 2 op amps, or 2 NAND gates etc etc.

    SEE THE DATASHEET for pin layouts. ;)
     
  7. KRT87

    Thread Starter New Member

    Mar 22, 2011
    4
    0
    Is it possible because the device (manufactured) is a 2-channel device (stereo) and the diagram I have only shows half (mono) that those two numbers next to chipsets indicate which half these pins belong to?

    The device is a stereo audio effect (or 2 mono) I know it has to have identical circuitry if the device was to be used as stereo so does this mean 2 signals share the same chipsets but separate (duplicate) components (ie resistors, capacitors etc)?
     
Loading...