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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/5VF64PASGSQ7S63X654POBLBOLKF64K4/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "5VF64PASGSQ7S63X654POBLBOLKF64K4",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/RQX4DLDIYY3MVVVNFRFO357N5UXLTUIQ/?format=api",
    "sender": {
        "address": "greencl (a) mindspring.com",
        "mailman_id": "5421c5ff9a12494f8f7bd304db4ac696",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/5421c5ff9a12494f8f7bd304db4ac696/emails/?format=api"
    },
    "sender_name": "Chuck Green",
    "subject": "[eagle] Re: CAN-Do-Too!",
    "date": "2007-07-17T02:50:12Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MR5O6XPAUZQLZ73YIXAP23WFHS2C7BPI/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "470 uH\nChuck\n\nJim Sanford wrote:\n> What is the value of the inductor at hand?\n> Jim\n>\n>\n> Chuck Green wrote:\n>> Hi Juan,\n>>\n>> I think you are referring to an e-mail I sent out. It was simply a \n>> suggestion to verify the hypothesis that the power supply is in a low \n>> power idle mode and hence the 5kHz you were seeing. It really doesn't \n>> matter if someone is going to redesign the power supply anyway.\n>>\n>> I don't have any shielded inductors to send you. There may not be any \n>> such thing in the same footprint as the inductor used. But even if it \n>> has to be cobbled in somehow, it would be a good test to run. If anyone \n>> has such an inductor, or knows the part number of such a device, it \n>> might be worth getting one. But again, if someone is going to redesign \n>> the power supply anyway, I would assume they will at least use a toroid, \n>> and possibly a shielded one.\n>>\n>> Chuck\n>>\n>> Juan Rivera wrote:\n>>   \n>>> Chuck,\n>>>\n>>> I seem to recall that you wanted me to try loading down the CAN-Do \n>>> switcher to see if the frequency went up. Was that you? I can’t find \n>>> the email. If it was, what additional load do you want me to apply? \n>>> And are you going to send me some shielded inductors to test? Let me \n>>> know and I’ll jump on it for you.\n>>>\n>>> 73,\n>>>\n>>> Juan\n>>>\n>>> ------------------------------------------------------------------------\n>>>\n>>> *From:* [email protected] [mailto:[email protected]] *On \n>>> Behalf Of *Louis McFadin\n>>> *Sent:* Monday, July 16, 2007 6:10 PM\n>>> *To:* Chuck Green\n>>> *Cc:* Dave Black ((Work)); Dave Black ((Home)); David Smith; AMSAT \n>>> Eagle; Samsonoff@Mac. Com; Juan.Rivera ((Work))\n>>> *Subject:* [eagle] Re: CAN-Do-Too! ??????????\n>>>\n>>> Chuck,\n>>>\n>>> Mouser has a very large selection of D-sub connectors including the \n>>> high density versions. Most are in stock.\n>>>\n>>> I see no inherent reason for not using them.\n>>>\n>>> Lou McFadin\n>>>\n>>> W5DID\n>>>\n>>> [email protected] <mailto:[email protected]>\n>>>\n>>>\n>>>\n>>> On Jul 16, 2007, at 7:19 PM, Chuck Green wrote:\n>>>\n>>>\n>>>\n>>> I have had one experience with the high density D connectors. They \n>>> were much larger pin count than 9 or 15! After someone absolutely \n>>> insisted that we use them I did the board lay out. Turned out that \n>>> they were *totally* unavailable!!! I did the board layout again@#$%&^* \n>>> using standard Sub-D's. That was a number of years ago so I would hope \n>>> things have changed. If someone is absolutely confident they can \n>>> obtain the parts we need then I'm not at all opposed to using them \n>>> (remember, I'm not volunteering to do parts procurement for this \n>>> project; this is a good time to use someone that's good at parts \n>>> procurement).\n>>>\n>>> While at Goddard for P3D vib test I noticed NASA satellites using \n>>> standard Sub-D's. That was also a few years ago. Anyone know of High \n>>> Density Sub-D's being used on other satellites?\n>>>\n>>> Chuck\n>>>\n>>> Bdale Garbee wrote:\n>>>\n>>>     \n>>>> On Tue, 2007-07-10 at 09:02 -0700, Chuck Green wrote:\n>>>>\n>>>>       \n>>>>> The sub-miniature D connector series has served us well. If anyone \n>>>>> has *experience* with something they think might be a better choice, \n>>>>> we'd love to hear about it.\n>>>>>\n>>>>>         \n>>>> At the AMSAT annual meeting that was held near Washington, D.C., a\n>>>>\n>>>> couple of years ago (three?), someone approached me after the CAN-Do!\n>>>>\n>>>> talk that Stephen and I gave to ask why we weren't using the\n>>>>\n>>>> higher-density connectors that put 15 pins in the same shell size as the\n>>>>\n>>>> 9-pin version of the series we have been using... and followed up by\n>>>>\n>>>> sending me what looked like mil/aero-spec samples of such a part that I\n>>>>\n>>>> probably still have in my basement somewhere. I'm sorry that I can't\n>>>>\n>>>> recall at all who that person was, but it was someone who claimed to be\n>>>>\n>>>> using such connectors professionally with good results.\n>>>>\n>>>> At the time, we weren't likely to be redesigning the units any time\n>>>>\n>>>> soon, so I didn't take any action on this suggestion. If we're going to\n>>>>\n>>>> revisit the design and think we need more than 9 pins, it might be worth\n>>>>\n>>>> investigating higher density connectors like that?\n>>>>\n>>>> Bdale\n>>>>\n>>>>       \n>> _______________________________________________\n>> Via the Eagle mailing list courtesy of AMSAT-NA\n>> [email protected]\n>> http://amsat.org/mailman/listinfo/eagle\n>>\n>>   \n",
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}