Return-Path: Received: from mtain-db01.r1000.mx.aol.com (mtain-db01.r1000.mx.aol.com [172.29.64.85]) by air-di08.mail.aol.com (v129.4) with ESMTP id MAILINDI084-eb694c0e633627c; Tue, 08 Jun 2010 11:35:18 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-db01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5D396380000D4; Tue, 8 Jun 2010 11:35:15 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OM0oT-0000oL-8g for rs_out_1@blacksheep.org; Tue, 08 Jun 2010 16:34:01 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OM0oS-0000oC-Ta for rsgb_lf_group@blacksheep.org; Tue, 08 Jun 2010 16:34:00 +0100 Received: from mhost02c.leeds.ac.uk ([129.11.76.154]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OM0oQ-00071j-81 for rsgb_lf_group@blacksheep.org; Tue, 08 Jun 2010 16:34:00 +0100 Received: from APOLLO1.ds.leeds.ac.uk (apollo1.leeds.ac.uk [129.11.5.4]) by mhost02c.leeds.ac.uk (8.14.3/8.14.3) with ESMTP id o58FXpZM006013 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT) for ; Tue, 8 Jun 2010 16:33:52 +0100 (BST) Received: from HERMES8.ds.leeds.ac.uk ([fe80::39ce:23e:d0b5:7e24]) by APOLLO1.ds.leeds.ac.uk ([129.11.5.4]) with mapi; Tue, 8 Jun 2010 16:33:51 +0100 From: Chris Trayner To: "rsgb_lf_group@blacksheep.org" Date: Tue, 8 Jun 2010 16:33:50 +0100 Thread-Topic: COIL WINDING THOUGHT Thread-Index: AcsHH/8Z5h3Hf/aeR4WoeeXt89UUFg== Message-ID: References: <002001cb070c$99d44b20$0401a8c0@xphd97xgq27nyf> ,<004201cb0713$7c295e10$0401a8c0@xphd97xgq27nyf> <02c701cb071b$26cbc130$0217aac0@desktop> <006a01cb071e$25de2580$0401a8c0@xphd97xgq27nyf> In-Reply-To: <006a01cb071e$25de2580$0401a8c0@xphd97xgq27nyf> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, en-GB MIME-Version: 1.0 X-Spam-Score: 1.2 (+) X-Spam-Report: autolearn=disabled,SUBJ_ALL_CAPS=1.166 Subject: LF: RE: COIL WINDING THOUGHT Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=LINES_OF_YELLING,SUBJ_ALL_CAPS, TO_ADDRESS_EQ_REAL autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d40554c0e63331547 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) > If I see smoke and hear a bang I will know that you mean business. You could also put a small steel plate in line with the coil to monitor cu= rrent - the mag field will pluck it like a speaker. Tune for maximum sound= rather than maximum smoke! (It would be worth putting a small permanent= magnet on it, or it will be pulled by both half cycles and will sound at= just under 18kHz, higher than most adults can hear.) 73, Chris G4OKW