X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao04.cox.net ([68.230.241.35] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 998080 for flyrotary@lancaironline.net; Sat, 25 Feb 2006 18:01:18 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.35; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao04.cox.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20060225225718.ZSZP17690.fed1rmmtao04.cox.net@BigAl> for ; Sat, 25 Feb 2006 17:57:18 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Fire Detector Unit Date: Sat, 25 Feb 2006 15:00:32 -0800 Message-ID: <000001c63a5f$47f94360$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C63A1C.39D87460" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C63A1C.39D87460 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Looks very interesting for a modest price. A couple of things on the = data sheet that caught my eye are: =20 Since the operation impedance is extremely high, the UV TRON should be connected as close as possible to the circuit board within 5 cm. =20 Take care to avoid external noise since a C-MOS IC is used in the = circuit. It is recommended that the whole PC board be put in the shield box when = it is used. =20 The radiated electrical noise from the coils, plugs and injectors is a potential issue since it is such a high-impedance detector. The only = way to know is to try it. =20 The circuit board may not like the in-cowl environment. =20 Al ------=_NextPart_000_0001_01C63A1C.39D87460 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Looks very interesting for a modest price.  A = couple of things on the data sheet that caught my eye are:

 

Since the operation impedance is = extremely high, the UV TRON should be connected as close as possible to the = circuit board within 5 cm.

 

Take care to avoid external noise = since a C-MOS IC is used in the circuit. It is recommended that the whole PC = board be put in the shield box when it is used.

 

The radiated electrical noise from the coils, plugs = and injectors is a potential issue since it is such a high-impedance detector.  The only way to know is to try it.

 

The circuit board may not like the in-cowl = environment.

 

Al

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