On Wed, 5 Nov 2008 14:46:46 -0000, "IanW" wrote:

"John Fields" wrote in message
.. .
Just for fun...

Hi John. Is pin 11 of U1 supposed to go anywhere, only it's not connected in
the diagram and the circuit doesn't work.

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U1-11 is a spare, so its output is supposed to float.

In which way does it not work?

JF