Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w01CCrqg023074 for ; Mon, 1 Jan 2018 13:12:56 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eVysc-0003SN-Km for rs_out_1@blacksheep.org; Mon, 01 Jan 2018 12:07:46 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eVysc-0003SE-8j for rsgb_lf_group@blacksheep.org; Mon, 01 Jan 2018 12:07:46 +0000 Received: from mout.gmx.net ([212.227.15.19]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eVysZ-00071Q-3O for rsgb_lf_group@blacksheep.org; Mon, 01 Jan 2018 12:07:45 +0000 Received: from Clemens0811 ([84.163.183.236]) by mail.gmx.com (mrgmx001 [212.227.17.190]) with ESMTPSA (Nemesis) id 0M1nbu-1el2xA00WA-00tioL for ; Mon, 01 Jan 2018 13:07:42 +0100 From: "Clemens Paul" To: References: <1245872871.20180101103858@gmail.com> <2B728BD9A22E47E991B5DABA279D0D27@Clemens0811> <188CDC35293448D088ABCA3CCC6B2184@Clemens0811> <831993214.20180101112620@gmail.com> In-Reply-To: <831993214.20180101112620@gmail.com> Date: Mon, 1 Jan 2018 13:07:41 +0100 Message-ID: <43E1315F9F0541D9965B368BDEA5F943@Clemens0811> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 Thread-Index: AdOC84X1sZSYUQqTTDGe4eqmfwDWHwAAdzCA X-MimeOLE: Produced By Microsoft MimeOLE X-Provags-ID: V03:K0:xNIF4e3K6VsPWrB/ccp4ZWKS1xhbqjHvhW+Q0mzodg4O/eCefKB 8UwU47VEellYNHSoZ6PHSd8MOrH7dWXhbe5UnMM66OlqH1em3T6pObKtY03LLN6zba57kTF 1vh3AkZewEwE8g8JsywhZoGUAvoHLEq6+vKjsNU0MpSZgQSjrpxxuPOLLmO3/mhUfJQ+hJx aFZg2AGG4idGfmdw0YC4g== X-UI-Out-Filterresults: notjunk:1;V01:K0:rLkxKc+zjy0=:4JR7QZJZi1uT1f9nEuUIK+ vO7Dhs4JPUUe17qm+kHhAqfjqlGnPWCcL7JjoVNTvo2av01JmsT6zg1LniI4NQ9SzBmHJisoV eQXBFm/plBLi9jUt5evF4Zy3XymW2HjvkX7IDCPICVgWveQ3YIrmR6yZD1ltPoOXOCkDs1K4T zlkULrqhVpf8FkHrXDomVie6lg0thc/SiPKN0kZnw2wX0iYJWn/kQW9Q1Vx7N8VHPT7JIZz2F wm8UG9wB7Lb23V4LMmZ4VW0CYnECp3qOz08m2H80XvwgQ/UVMUSiR4P0mSILCv/BZNSvLQiVe kzh2RpjNwK7v3fOB0NByeY5cS+8uehCUtTmWA08WPfJyKklkuwyUuRxklMCJuiUJF1Juyoisp J31eQ4cd2F92uwFJjaYEIPQ66fWfIEQwBHSh61NhtMXt4xBRy9TH+xk3MyMlV+q4v6lNAC248 ub3Q5dqkkwMJBKy6FbI/Ndo90bXoMNhM7swF3m0E9TDwlaKoHbt7mLF0u+GZDysZgQcuk4ydG zgUNYueZoK+fM/1GxUAu8WMJONvjBZsk/liokCOyd6YheNJsytCEWm3OqHfxOeApaPPYFO/3g 4fnX3/nwG1kftIfzCgUbsY1DqNiO9CtFjNtpjJg/XEGQppE1Je1ddvIgNu4e0ZClQrEOFwrGB ihIFBboIkqQ/24+oma1VGSdB6S4v3eX71JwMlstf/OsUXQiN3yqGO58PxZ3vhrmSmJ5pSgQvA polWgSkal/3V11leWoBeap3Sx+D5FQuk/YGuO9Y6J010L2k9EZjIK3ltpldRdDcLYX9F6mLUB ywl2Pfq3Hhhgv9uylddn2bdce2fU+IJgumnDeRLtYal03gSwYY= X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > Thanks Clemens, I'd need two, correct? Could I try say 4 to 16 turns > on two FT-37-43 cores, which I have? A turns ratio of 4:16 gives a 1:4 voltage ratio so this ratio would require only one core. [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (cpaul[at]gmx.net) X-Scan-Signature: 896f9ee4f10c5db37812c155e804756d Subject: RE: LF: RE: RE: Si5351A syntehsiser able to fire a FET driver chip directly?? Content-Type: text/plain; charset="iso-8859-1" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by klubnl.pl id w01CCrqg023074 > Thanks Clemens, I'd need two, correct? Could I try say 4 to 16 turns > on two FT-37-43 cores, which I have? A turns ratio of 4:16 gives a 1:4 voltage ratio so this ratio would require only one core. One could make one 1:4 (V) transformer or two cascaded 1:2 (V) ones, the latter probably being more feasible. But 4 turns for the primary on a FT37-43 give 4µH which is only 3.4 Ohms on 137kHz. This would probably eat up all the "ooomph" of the driver chip by the magnetizing current. I would suggest at least 500µH which is 430 Ohms on 137kHz. So you'd have to choose a different material,e.g. "J". With two cascaded FT 37-J's this would require 15 turns for the primary and 30 for the secondary which appears just manageable. A bigger core would make things easier,though. Then you could use one core with 15:60 turns. 73 Clemens DL4RAJ ill the Si synthesizer chip have > enough "ooomph" to drive them? >-----Original Message----- >From: owner-rsgb_lf_group@blacksheep.org >[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Chris Wilson >Sent: Monday, January 1, 2018 12:26 PM >To: Clemens Paul >Cc: dead.fets@gmail.com >Subject: Re: LF: RE: RE: Si5351A syntehsiser able to fire a >FET driver chip directly?? > > > >Hello Clemens, > >Monday, January 1, 2018, 11:10:44 AM, you wrote: > > >>How about a 1:4 transformer? ->Voltage ratio! > > > Thanks Clemens, I'd need two, correct? Could I try say 4 to 16 turns > on two FT-37-43 cores, which I have? Will the Si synthesizer chip have > enough "ooomph" to drive them? > > > > >-- >Best regards, > Chris mailto:dead.fets@gmail.com > > > >--- >Diese E-Mail wurde von AVG auf Viren geprüft. >http://www.avg.com >