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Electronics Forum / CAD / May 2005



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PSPICE changing the Phase Angle

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Mikal - 28 May 2005 00:13 GMT
What's the best way to change the phase angle of an ac sign wave? For
example, I'm trying to sim costas loop, and I need a 90 degrees phase
shift from the VCO output.
Jim Thompson - 28 May 2005 01:03 GMT
>What's the best way to change the phase angle of an ac sign wave? For
>example, I'm trying to sim costas loop, and I need a 90 degrees phase
>shift from the VCO output.

How are you modeling the VCO?

If you are just using fixed sources, use

Vvco node1 node2 SIN (<ioff> <iampl> <freq> <td> <df> <phase>)
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Mikal - 31 May 2005 18:44 GMT
I'm sorry, but I'm lost. I'm new to pspice... how would you implement
this?
  I'm creating somthing like a costas loop, and I need a variable VCO
with 0 and 90 degrees phase shift at a variable freq.
 
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