Problem with getting PWM using UC3825

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kconzz

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uc3825

Hi guys,

I have a problem trying to get the PWM working...
Attached is my schematic.
I trying to use this IC to do SPWM.
therefore, i try to use Function generater of sine 50Hz to the input.
However, I could not get anything from the output.

can someone help me?
Thanks!

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uc3825 spice model

Is there any simulation software with UC3825 pspice? Please advise! thanks
 

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