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 w3C0tLGd000513 for ; Thu, 12 Apr 2018 02:55:24 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1f6QRp-0008Dw-AZ for rs_out_1@blacksheep.org; Thu, 12 Apr 2018 01:50:45 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1f6QRh-0008Dn-5Z for rsgb_lf_group@blacksheep.org; Thu, 12 Apr 2018 01:50:37 +0100 Received: from resqmta-ch2-01v.sys.comcast.net ([2001:558:fe21:29:69:252:207:33]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1f6QRd-0001aQ-Q6 for rsgb_lf_group@blacksheep.org; Thu, 12 Apr 2018 01:50:35 +0100 Received: from resomta-ch2-12v.sys.comcast.net ([69.252.207.108]) by resqmta-ch2-01v.sys.comcast.net with ESMTP id 6QQWfWQMhtYHF6QRZfVumv; Thu, 12 Apr 2018 00:50:29 +0000 X-DKIM-Result: Domain=comcast.net Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20161114; t=1523494229; bh=DVWilXTVBzWDPzNgVLQvUHTwNnFdps6gfpWC19+vFfA=; h=Received:Received:From:Subject:To:Content-Type:MIME-Version:Date: Message-ID; b=THGty4Kv4KF1dfDcaDys/IFxaDP1oQ90XeJc5zUzOCEoyQLvjVXWQJ/ksccWDh+Iu 4JmT6XZxDV/EjSN0GTApZ+ctLnPVuzxABzzwLtIxOdvgJzNU8QKK0gMjEpH7ZLuRcP BGJPoY2wram0776TCRGhrsfGvNEvveBoOonyvZe7BdV8ZTpVrzNkoA67Ul1z5c+EMf evSfUZJmAucTxrS7eBBCSJWDzbQ8pHe6tJkGmBUTQsuzRehHzovxltjF2fhUQWdsHq 3TPXlg9aqXienICe23I9yBos6bIa576IxFLFQM7AudwtqL71NbVCgchtktZbdZvNpr 1TGQEZ3jtx5ag== Received: from Optiplex980-PC ([73.4.253.141]) by resomta-ch2-12v.sys.comcast.net with SMTP id 6QRXfsQOdhf9S6QRYffz8o; Thu, 12 Apr 2018 00:50:29 +0000 From: "jrusgrove@comcast.net" To: "rsgb_lf_group@blacksheep.org" MIME-Version: 1.0 References: <1UQRRBrZ33.5N62o0UWd72@optiplex980-pc> <1b2b034a-404d-8b95-220c-5568950a1918@n1bug.com> <1523452469895.92892@kuleuven.be> <8c1acac6-e271-6398-2768-481298344387@n1bug.com> <1523457751831.88599@kuleuven.be> <612685899.20180411225537@gmail.com> <968686644.20180411232838@gmail.com> <7950E881690348FB8A48C42DD2735F8D@StevePC> Date: Wed, 11 Apr 2018 20:50:27 -0400 Message-ID: <1UQRSH98Tx.2IrTZ1ue7L6@optiplex980-pc> In-Reply-To: <7950E881690348FB8A48C42DD2735F8D@StevePC> User-Agent: OEClassic/2.7 (Win7; P; 2017-02-12) X-Mailer: OEClassic/2.7 (Win7; P; 2017-02-12) X-CMAE-Envelope: MS4wfOyuNFzk6CISurtnKCB9eVIvRLJziT+Pw8qhf8HsokgcBg8kQOD75sSc8ANLo5Nd0V1siNLfxRJ3F7dKPmjXQfOEL5q1hYN/fo9eObVOw2GVEeTLdECE aO40rNG23S807wokCgLb7tQUgNYKh0DllGFeoa6ngyXwLsh8SyGpbXNMuRMWNtoUUnM7UkyxLAspnQ== 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: Paul I just tried my earlier suggestion of doubling the value of the 'timing' capacitors to 2000 pF on the amplifier. As expected, the dead zone between the phases about doubled ... and is now significantly wider than necessary. I'm having a hard time understanding how you have no dead zone with 1000 pF caps ... and adding an additional 1000 pF makes no difference to the waveform! Believe that if you solve the missing dead zone issue you'll solve the excessive ringing. Something is amiss in your driver circuit. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (jrusgrove[at]comcast.net) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 3f8d74a8c70dd416d0a3a1dbcb9bb89f Subject: Re: LF: W1VD amp help - more waveforms Content-Type: multipart/alternative; boundary="BZnW=_38hmgHLquaX16DnVqQQ4UqdRmnlD" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE, 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 This is a multi-part message in MIME format --BZnW=_38hmgHLquaX16DnVqQQ4UqdRmnlD Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Paul I just tried my earlier suggestion of doubling the value of the 'timin= g'=20 capacitors to 2000 pF on the amplifier. As expected, the dead zone bet= ween the=20 phases about doubled ... and is now significantly wider than necessary= =2E=20 I'm having a hard time understanding how you have no dead zone with 10= 00 pF caps ... and adding an additional 1000 pF makes no difference to= the waveform! Believe that if you solve the missing dead zone issue = you'll=20 solve the excessive ringing. Something is amiss in your driver circuit= =2E Jay W1VD =20 --BZnW=_38hmgHLquaX16DnVqQQ4UqdRmnlD Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Paul
 
I just tried my earlier suggestion of doubling the value of the '= timing' capacitors to 2000 pF on the amplifier. As expected,= the dead zone between the phases about doubled ... and is now&nb= sp;significantly wider than necessary. I'm having a hard time und= erstanding how you have no dead zone with 1000 pF caps ... and ad= ding an additional 1000 pF makes no difference to the waveform! &= nbsp;Believe that if you solve the missing dead zone issue you'll= solve the excessive ringing. Something is amiss in your driver c= ircuit.
 
Jay W1VD         &nb= sp;
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