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[82.70.254.222]) by smtp.gmail.com with ESMTPSA id z14-v6sm1389323wma.18.2018.09.18.06.40.33 (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 18 Sep 2018 06:40:34 -0700 (PDT) Date: Tue, 18 Sep 2018 14:40:32 +0100 From: Chris Wilson X-Priority: 3 (Normal) Message-ID: <84266593.20180918144032@gmail.com> To: N1BUG In-Reply-To: <9cfaf19b-3c17-31a4-c253-3d39018c616e@n1bug.com> References: <1402307201.20180918094016@gmail.com> <31f7c601-0496-7a6a-144e-86e7e3eaff0c@n1bug.com> <1405681597.20180918113832@gmail.com> <19864612.20180918121009@gmail.com> <9cfaf19b-3c17-31a4-c253-3d39018c616e@n1bug.com> MIME-Version: 1.0 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 @@CONTACT_ADDRESS@@ for details. Content preview: Hello Paul I am not sure I did get a current clamp scope capture. If I *DO* lose a FET it's nearly always when running OPERA with the constant stopping and starting, or so it seems. Only lost three in 2018 so far, so it's not too bad, compared to the old days ;) [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:42b listed in] [list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dead.fets[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 2e2f7cbbe9f38dd7bf3fac4fc012e6fc Subject: Re: LF: Re: And again! Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=PRIORITY_NO_NAME 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 Hello Paul I am not sure I did get a current clamp scope capture. If I *DO* lose a FET it's nearly always when running OPERA with the constant stopping and starting, or so it seems. Only lost three in 2018 so far, so it's not too bad, compared to the old days ;) Tuesday, September 18, 2018, 2:28:09 PM, you wrote: > I'm afraid I can't help with that one. I spent some time trying to > figure out how to implement SWR and over current protection but > didn't come up with anything. I'll just have to use the FETs as > sacrificial devices. > I am a bit puzzled by the current spike on start of transmission. > What would cause that? > Paul -- Best regards, Chris mailto:dead.fets@gmail.com