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Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <277967114.20180412191941@gmail.com> Content-Language: en-US X-Provags-ID: V03:K1:TpTCaJTT5RzW/ipZHpDF1KKMKPUIzr3kooetXimIC7tKCWwPq/E w7qYlcFCfsKzytGez0i6elhoOHrT9FVSiZf5tNY8cYmyxQuN7ipeF/d/Nx2ekCyIFP84Ez2 eL4z6Y3SxXNmPq7rBjqTgGPi0jWVwEwiqsgwyuzaDxhVy4lxt8EoMi6lcukb1uJnN8QeIP8 NBM4acjq53TN7pGmftlvg== X-UI-Out-Filterresults: notjunk:1;V01:K0:qo9Yvr88qbs=:tTB25v/xxU3EIGzS9SXAAv GeuVm/H8jYJJyWY8LoT2rhj/8OjmSDIr7vChpSHZf3iEBVUwAeubtpuW56uDUx6UUPHaWVjo5 MDn9WAgB6o3kQlaSG5jeTUcG+B/mGHLmJg4fljcKYWelE1la792KMzIpz3XtDsCEWzE4uvfsZ ps+UCfhxCDKniV4D/yEM5Ku2ny9EjZrZEBF4RAPlPoHL4gXi7B4oIam3Xc0otSsSAARPFvQdD fryvmJ2WV/HfFCTvHSIcx2GOlOMdl2B1iKxDY4pESJu00El+LWi39DxKHe7jocEg4BoTM0CBu YXEbafUW8JURytA+oTSd3wCd8RfIoF4wUyR3J63FrII2O2hnKHUmiARiqM71dC8HvyWdvHbpE ZDKDMWfvakVCmHs4HFHPlyOK8QJkiOSNOFQF7nN3soHUf65DsYrbHCGb1Fctr2FjWHeKOJTmJ a3TRJ3I2VKKfB5XQwnRTly5t6+qtkruH3yWNE05KAfjenAYOwDCUGHF6eDnTbbl+JpPw0Tqy6 Od/7c+z/NAS8d75GMLVaVLpAGhYCIqg7204lG0Mgk1EGd1lQc88YhjcU4jB6qFfraNIIx5j2+ l0ZUOSCizkzHrwHTu3Qv8n9HwdbDosmr6K+7YAyO9bUAvxzQtpYO3NVGCAZ/CazvuIRjq90WO STYWSrRjmcUPateF0Zsze30LEN7wGEDvtvTaN3yJU0g2xzxry3S+BJrw9DgJtucOu+ei8o8Gx u/6JjXuHLgW2R77aPf0TUoyTREKxjkOzs3p0VqQJ0F/1Ije5hYqkOdVKchM= 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: Hi Chris, Actually that's a bit of trickery on my part. :-) I wanted all the coils to "look" about the same. All the Delrin end plates are 1/4" thick. On the center one I wrapped the core with glass cloth tape, wound I think 54 turns, wrapped part of that winding with glass cloth tape, wound the remaining turns for a total of 73. Then I milled down the 1/4" thick Delrin plates to 1/8" in the area that would be on the double layer part of the winding. So the plates slide on exactly as far and leave exactly as much bolt exposed as the plates on the single layer end coils. A bit hard to put into words but I think you get the idea. I promise you they are 52, 73, and 52 turns. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- X-Scan-Signature: 1c38f63d01970a2bf149f660c9cb2a37 Subject: Re: LF: W1VD amp help - more waveforms Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit 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 Hi Chris, Actually that's a bit of trickery on my part. :-) I wanted all the coils to "look" about the same. All the Delrin end plates are 1/4" thick. On the center one I wrapped the core with glass cloth tape, wound I think 54 turns, wrapped part of that winding with glass cloth tape, wound the remaining turns for a total of 73. Then I milled down the 1/4" thick Delrin plates to 1/8" in the area that would be on the double layer part of the winding. So the plates slide on exactly as far and leave exactly as much bolt exposed as the plates on the single layer end coils. A bit hard to put into words but I think you get the idea. I promise you they are 52, 73, and 52 turns. Paul On 04/12/2018 02:19 PM, Chris Wilson wrote: > > > Hello Paul, > > I am looking at your photo of the LPF. The specs say L1 and L3 should > have 52 turns, and L2, the centre one, should have 73 turns. i was > unable to get 73 turns on the toroid without winding on top of a lower > layer, and insulated with Kaptan tape. This made the overall depth > quite a bit deeper than L1 and L3. In the photo it looks like the > centre toroid overall is no deeper than the end ones, and the amount > of bolt thread protruding *LOOKS* the same as the end ones. Your build > is so painstakingly neat though, it may be that you have aesthetically > made all the toroids look identical. > > http://www.chriswilson.tv/paul-lpf.jpg > > Thursday, April 12, 2018, 5:42:13 PM, you wrote: > >> Jay, > >> When the package arrives I will swap out the caps and the IR2110. If >> that doesn't do it I will order a new 74F74 and swap out the >> resistors. If all of that fails I don't see anything else I can do. >> Realistically at my level of expertise if it doesn't work at that >> point I will have reached the end of the road. :-( > >> The caps I have are KEMET part # R82EC1100Z350J > >> Here is a link to the datasheet: > >> https://www.mouser.com/datasheet/2/212/KEM_F3101_R82-1103738.pdf > >> Paul