---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 10/20/19: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:32 AM - Desulfinating trickle charger with Garmin avionics (whodja) 2. 06:32 AM - Re: food machinery (Robert L. Nuckolls, III) 3. 06:43 AM - Re: Soldering to a Solid Wire (Robert L. Nuckolls, III) 4. 07:01 AM - Re: Soldering to a Solid Wire (Sebastien) 5. 08:50 AM - Re: Desulfinating trickle charger with Garmin avionics (Dick Gurley) 6. 10:07 AM - Re: Desulfinating trickle charger with Garmin avionics (James kale) 7. 11:29 AM - Re: Desulfinating trickle charger with Garmin avionics (Henador Titzoff) 8. 02:18 PM - Pmag diode (eschlanser) 9. 03:51 PM - Re: Desulfinating trickle charger with Garmin avionics (Robert L. Nuckolls, III) 10. 03:54 PM - Re: Pmag diode (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 04:32:43 AM PST US Subject: AeroElectric-List: Desulfinating trickle charger with Garmin avionics From: "whodja" I use an Odyssey battery charger for my PC680 to maintain the battery. Occasionally I turn on the Garmin avionics while the charger is connected. I recently heard that the desulfurization circuitry is bad for an internal fuse in the avionics. Does anyone know about this? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491877#491877 ________________________________ Message 2 _____________________________________ Time: 06:32:34 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: food machinery At 07:11 AM 10/19/2019, you wrote: > >What is food machinery ? spam . . . ignore Bob . . . ________________________________ Message 3 _____________________________________ Time: 06:43:02 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Soldering to a Solid Wire At 11:52 AM 10/19/2019, you wrote: >I replaced my mechanical tach with a digital one last week and >needed to connect some very small wires that came with the new tach >to a couple resistors. Decided to solder rather than crimp because >of how small the wires are. It was only halfway through that I >realized I should have asked around to see if there is a proper way >of doing this. I didn't find anything in the AEC or 43-13. > >Is this good? I would cover the resistors and their exposed lead wires with heat shrink before crimping the terminals on. Bob . . . ________________________________ Message 4 _____________________________________ Time: 07:01:44 AM PST US From: Sebastien Subject: Re: AeroElectric-List: Soldering to a Solid Wire Well yes, but only if you think of it before crimping the terminal on :). Fortunately I have heatshrink that's just the right size to fit over those terminals. I wish I had used clear heatshrink though so I could see what it looked like once everything was bent and attached in position. Sure is nice not having that clunky tach drive going from the engine to the panel anymore. On Sun, Oct 20, 2019, 09:47 Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 11:52 AM 10/19/2019, you wrote: > > I replaced my mechanical tach with a digital one last week and needed to > connect some very small wires that came with the new tach to a couple > resistors. Decided to solder rather than crimp because of how small the > wires are. It was only halfway through that I realized I should have asked > around to see if there is a proper way of doing this. I didn't find > anything in the AEC or 43-13. > > Is this good? > > > I would cover the resistors and their > exposed lead wires with heat shrink > before crimping the terminals on. > > > Bob . . . > ________________________________ Message 5 _____________________________________ Time: 08:50:44 AM PST US From: Dick Gurley Subject: Re: AeroElectric-List: Desulfinating trickle charger with Garmin avionics Sent from my iPhone > On Oct 20, 2019, at 7:31 AM, whodja wrote: > > > I use an Odyssey battery charger for my PC680 to maintain the battery. Occasionally I turn on the Garmin avionics while the charger is connected. I recently heard that the desulfurization circuitry is bad for an internal fuse in the avionics. Does anyone know about this? > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=491877#491877 > > > > > > > > > ________________________________ Message 6 _____________________________________ Time: 10:07:48 AM PST US From: "James kale" Subject: RE: AeroElectric-List: Desulfinating trickle charger with Garmin avionics Most desulfurization circuits send an occasional high voltage spike down the charger leads. This only lasts for a few milliseconds. However, the high voltage spike could lead to a couple of milliseconds of high current. This should not damage most fuse/circuit breakers, however, there might be some out there that could be damaged. -----Original Message----- From: owner-aeroelectric-list-server@matronics.com On Behalf Of whodja Sent: Sunday, October 20, 2019 6:32 AM Subject: AeroElectric-List: Desulfinating trickle charger with Garmin avionics I use an Odyssey battery charger for my PC680 to maintain the battery. Occasionally I turn on the Garmin avionics while the charger is connected. I recently heard that the desulfurization circuitry is bad for an internal fuse in the avionics. Does anyone know about this? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491877#491877 ________________________________ Message 7 _____________________________________ Time: 11:29:22 AM PST US From: Henador Titzoff Subject: Re: AeroElectric-List: Desulfinating trickle charger with Garmin avionics The high voltage spike to desulfurize doesn't have to produce high current to damage something.=C2- Transistors, for example are two conductors sand wiching an insulator that is modulated by a control voltage to control the current between the two conductors.=C2- If a high voltage spike comes in on the power supply, it leads to one of the conductors and can cause punch through, meaning that it can chip away at it until only a percentage of it left.=C2- That causes the transistor to no function according to its spec ifications and can lead to either a complete failure or partial failure.=C2 - It is these partial failures that cause anomalies in circuits that are hard to troubleshoot. Think of these two conductors and the sandwiched insulator as a PNP or NPN. =C2- Even a diode can get chipped away or totally blown away.=C2- Capac itors also have dielectrics that can be damaged.=C2- There are all sorts of anomaly producers in a typical circuit board. This is one reason why I don't really like the fancy battery chargers.=C2 - I'd rather keep my batteries topped off frequently to avoid sulfurizati on.=C2- And of course I don't have that problem in my vehicles, because t hat dumb regulator does a great job of topping off the battery that never r eally goes below 90%. Henador Titzoff On Sunday, October 20, 2019, 01:27:50 PM EDT, James kale wrote: com> Most desulfurization circuits send an occasional high voltage spike down th e charger leads.=C2- This only lasts for a few milliseconds.=C2- However, the high voltage spike could lead to a couple of milliseconds of high current.=C2- This should not damage most fuse/circuit breakers, however, there might be some out there that could be damaged. -----Original Message----- From: owner-aeroelectric-list-server@matronics.com On Behalf Of whodja Sent: Sunday, October 20, 2019 6:32 AM Subject: AeroElectric-List: Desulfinating trickle charger with Garmin avionics I use an Odyssey battery charger for my PC680 to maintain the battery. Occasionally I turn on the Garmin avionics while the charger is connected. I recently heard that the desulfurization circuitry is bad for an internal fuse in the avionics. Does anyone know about this? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491877#491877 - S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 8 _____________________________________ Time: 02:18:30 PM PST US Subject: AeroElectric-List: Pmag diode From: "eschlanser" Whats a good way to attach a diode to the Pmag connector? The diode has small solid wires that go to screw down sockets #1 and 6 that also get one 18-20 ga stranded wire in each socket . Read this topic online here: http://forums.matronics.com/viewtopic.php?p=491886#491886 Attachments: http://forums.matronics.com//files/285ba7c0_e9c5_4c33_8d79_79b2a09170fd_149.png http://forums.matronics.com//files/6f8614c3_9404_46e5_860f_dcd028abed24_119.png ________________________________ Message 9 _____________________________________ Time: 03:51:50 PM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Desulfinating trickle charger with Garmin avionics At 12:05 PM 10/20/2019, you wrote: > >Most desulfurization circuits send an occasional high voltage spike down the >charger leads. This only lasts for a few milliseconds. However, the high >voltage spike could lead to a couple of milliseconds of high current. This >should not damage most fuse/circuit breakers, however, there might be some >out there that could be damaged. There are no known techniques for 'breaking up' hard sulfate crystals or recovering a battery that has succumbed to inevitable end-of-life conditions whether by accident, poor maintenance or time in service. Claims to the contrary describe a constellation of electrical stimuli with carefully defined physics. The problem is that every patented desulfation technique has some feature that sets it apart from all others else it could not be patented. I've likened searches for the ultimate desulfation device to be as productive as walking into a health supplements store with 10,000 products seeking the ultimate mitigation of your particular discomfort. The proprietor cannot tell you that any one thing or combination of things will "fix you right up". That would be practicing medicine. What they can do is point you to a book about the size of a NY phone book that offers a one-stop source for claims proffered by every product on their shelves, "here, check it out . . . we got them all!" I've done a site search on 'sulfate' for https://batteryuniversity.com/search/search&keywords=sulfate/P10 Here we are offered 14 articles (out of hundreds on the site) that speak to lead sulfate. There is one article . . . https://batteryuniversity.com/learn/article/additives that speaks to chemical additives that may recover some battery performance . . . but it only works on flooded batteries and is of limited benefit . . . for our purposes it would not make an un-airworthy battery flyable. There are NO articles that speak to recovering significant capacity in a battery that has suffered an infestation of hard lead-sulfate crystals. The ENERGY produced by so-called desulfation pulses is tiny. They pose no risk to any hardware on the airplane that might still be connected to a battery that you're trying to recover with the magic battery charger. By the way, after a series of discharge/ recharge tests with sequential cap-checks on a Battery Minder Plus followed by a 4 month maintenance interval, I find ZERO improvement in battery performance. In fact, the test article's 9-volt/15-second load test value DROPPED from 150A down to 60A. I would not have expected jaw dropping recovery . . . but some degree of improvement would have been tentatively validating of the manufacturer's claims. After more than a decade of observation of and association with the lead-acid battery market, I'm calling the whole desulfation thingy 'snake oil'. If anyone discovers a product backed up with a report of laboratory/field controlled experiments that demonstrate the product's efficacy, I'll be most pleased to eat my words. Bob . . . ________________________________ Message 10 ____________________________________ Time: 03:54:40 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Pmag diode At 04:17 PM 10/20/2019, you wrote: > >What=99s a good way to attach a diode to the >Pmag connector? The diode has small solid wires >that go to screw down sockets #1 and 6 that also >get one 18-20 ga stranded wire in each socket . Does your tach REQUIRE this diode? Bob . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.