Return-Path: <13brv3@bellsouth.net> Received: from [205.152.59.68] (HELO imf20aec.bellsouth.net) by logan.com (CommuniGate Pro SMTP 4.1) with ESMTP id 2500073 for flyrotary@lancaironline.net; Mon, 21 Jul 2003 16:42:20 -0400 Received: from rad ([68.212.3.144]) by imf20aec.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030721204215.JVMZ1780.imf20aec.bellsouth.net@rad> for ; Mon, 21 Jul 2003 16:42:15 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Tachs & things Date: Mon, 21 Jul 2003 15:42:16 -0500 Message-ID: <000001c34fc8$92821d00$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C34F9E.A9AC1500" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C34F9E.A9AC1500 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable This morning I got to thinking that all I really need to do is divide = the 12pulse/rev high resolution signal from the EC2 by 3, then a tach set = for an 8 cylinder, 4 stroke should read correctly. So after a little research, = I ordered a NTE4526B programmable divide-by-"N" 4-bit binary counter. So = long as I don't need to do any signal conditioning, I should be able to = solder this to a small piece of breadboard, with jumpers on the appropriate = pins and leads, and it should work great. =20 Hi Todd, I thought about that earlier, but I didn't know if the tach needed to = see 12V pulses. Then again, I also don't know what voltage the tach output = of Tracy's unit is. I'll go out on a limb here and state definitively, = that either it will work, or it won't :-) =20 Rusty ------=_NextPart_000_0001_01C34F9E.A9AC1500 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable RE: [FlyRotary] Re: Tachs & things

This morning I got to thinking that all I = really need to do is divide the 12pulse/rev high resolution signal from the EC2 by = 3, then a tach set for an 8 cylinder, 4 stroke should read correctly. So after a = little research, I ordered a NTE4526B programmable divide-by-"N" = 4-bit binary counter. So long as I don't need to do any signal conditioning, I = should be able to solder this to a small piece of breadboard, with jumpers on = the appropriate pins and leads, and it should work great.

 

Hi Todd,

I thought about that earlier, but I didn’t know = if the tach needed to see 12V pulses.  Then again, I also don’t know = what voltage the tach output of Tracy’s unit is.   I’ll go out on a limb here and state definitively, = that either it will work, or it won’t :-) 

Rusty

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