X-Virus-Scanned: clean according to Sophos on Logan.com From: "Joseph Berki" Received: from pacmmta55.windstream.net ([162.39.147.221] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTP id 6981577 for flyrotary@lancaironline.net; Wed, 16 Jul 2014 15:09:18 -0400 Received-SPF: pass receiver=logan.com; client-ip=162.39.147.221; envelope-from=jskmberki@windstream.net Received: from [192.168.254.6] ([174.130.85.211]) by pacmmta55.windstream.net with pacmmta55 id T78i1o00G4ZanwW0178idm; Wed, 16 Jul 2014 15:08:43 -0400 X-WS-COS: WSOB804 X-Cloudmark-Category: undefined X-Cloudmark-Analysis: v=2.1 cv=eZKuId0H c=1 sm=1 tr=0 a=4GVYtZg8t2mhkSvHgo3hBw==:117 a=4GVYtZg8t2mhkSvHgo3hBw==:17 a=o2QoyYduAAAA:8 a=UT_QgiwtmQIA:10 a=kj9zAlcOel0A:10 a=XYrx2h7f5BnO1RPlKAAA:9 a=CjuIK1q_8ugA:10 a=9hoA6kglB0gA:10 a=MRcjDGuKyMIA:10 a=UK4_V_zGTCUA:10 X-Cloudmark-Score: 0.00 X-WS-Auth: jskmberki@windstream.net Authentication-Results: pacmmta55.windstream.net ; auth=pass smtp.auth=jskmberki@windstream.net Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: LM2907 Tachometer circuit Message-Id: <1AC053DC-B031-4828-8B68-6EFF8E1E5EC2@windstream.net> Date: Wed, 16 Jul 2014 15:08:42 -0400 To: Rotary motors in aircraft Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) X-Mailer: Apple Mail (2.1878.6) Has anyone used the LM2709 chip in a tach circuit? I am confused with = the data sheet as pinouts are different. I would like to see a schematic that works with the 2nd gen CAS, Thanks for any help. Joe Berki