I am posting this circuit as I've had a few request
sorry it's not PDF
its a windows bitmap
ps: any op amp should work
--
Peter Cousens
email: peter@cousens.her.forthnet.gr
snailmail: Peter Cousens, karteros, Heraklion, Crete, 75100, Greece,
phone: + 3081 380534,    +3081 324450   voice/fax

After Bill Gates announced to the world that he was Microsoft,
his wife was asked to comment. She said that as his wife, she
had been the first to notice this problem

Content-Type: image/x-MS-bmp; name="SINESQ.BMP"
Content-Disposition: inline; filename="SINESQ.BMP"

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