Combine two circuits

Hello,
I'm an abolute beginner in Multisim. I want to simulate an DC -voltage equivalent from a phase difference of two AC signals.
I've done two simulations:
1. Four Quadrat Multplier
2. RMS
And validate them - works good.
When i combine the two circuits - the output W from the AD633JN with the input 4 VIN of the AD636JH the output 8 BUFOUT is not the expected RMS of the input - it is always equal 0.
Please help me.
Attachments:
data.zip ‏670 KB

Hello Martin,
my solution is not the best way. I think the problem depends on the first IC
because it's delivers too less current for the second IC.
What do you think?
Best regards
Lorenz
Attachments:
together_new.ms12 ‏1965 KB

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Sankar M

Hi,
Can you post it as two halves ?
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