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Need help, level shifting

Discussion in 'Electronic Design' started by amdx, Dec 3, 2006.

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  1. amdx

    amdx Guest

    I have a 1 volt 5hz triangle wave setting on 4vdc, I need
    to lower the 4vdc to 1vdc. (This is chip #1 output)
    I'm driving pin 7 of a XR2206, you adjust frequency by sinking
    between 1ua and 3ma from this pin. (This is chip #2 input)
    Chip #1 is driving a 4.7k resitor with a 220kohm to ground.
    Chip #2 Pin 7 is connected to the junction of the 4.7k and 220kohm.
    I want to avoid a negative supply.
    Thanks, Mike
     
  2. Jim Thompson

    Jim Thompson Guest

    And what is chip #1?

    Maybe post a schematic? A link, or on ABSE?

    ...Jim Thompson
     
  3. amdx

    amdx Guest

    Chip #1 is also an XR2206 pin 2 is a triangle output.
     
  4. Jim Thompson

    Jim Thompson Guest

    Post a schematic if you want help. I don't have time to reconstruct
    one from verbiage.

    ...Jim Thompson
     
  5. amdx

    amdx Guest

    Thanks Jim,
    I found a solution which led to better one.
    Mike
     
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