---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 12/31/16: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:30 AM - Re: 5 Volt Converter Product Review (user9253) 2. 11:39 AM - Airport Cafe's Now Listed in ACC's (gbrasch) 3. 01:35 PM - Re: Re: 5 Volt Converter Product Review (Eric Page) ________________________________ Message 1 _____________________________________ Time: 06:30:45 AM PST US Subject: AeroElectric-List: Re: 5 Volt Converter Product Review From: "user9253" Eric, Please verify that the "D-" data pin has a positive voltage even though it is labeled with a minus sign. Also, I assume that computers do not have voltage on the data pins because that would interfere with data transfer. Is that correct or wrong? Thanks, Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=464510#464510 ________________________________ Message 2 _____________________________________ Time: 11:39:53 AM PST US Subject: AeroElectric-List: Airport Cafe's Now Listed in ACC's From: "gbrasch" I have just added over 50 airport cafs (and still growing) to current listings in the Airport Courtesy Cars website and app (just in case your courtesy car isnt available when you arrive!) These listings are highlighted in red so you can easily find them. If you have any additions or corrections, please email them directly to me at airportcars101@gmail.com. Thanks and Happy New Year! Glenn PS, Submit your ramp fee's experience also for inclusion in the website/app! -------- Glenn Brasch RV-9A Flying Medevac Helicopter Pilot (Ret) Owner, "Airport Courtesy Cars" Smart Phone App and www.airportcourtesycars.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=464547#464547 ________________________________ Message 3 _____________________________________ Time: 01:35:13 PM PST US Subject: Re: AeroElectric-List: Re: 5 Volt Converter Product Review From: Eric Page Yes, for charging adapters, both voltages are positive. The D+ and D- labels refer to their use in USB data communications. You're correct. A computer's USB port won't have a constant voltage on the data pins like a charger has, but the voltage will rise and fall at very high speed to send digital data. Apple computers probably have a chip in the USB data path that communicates with their Lightning cable authentication chip (speculation on my part). As I mentioned in another post, there are dedicated charging port chips that sense the attached device and configure the data pin voltages appropriately. Eric > On Dec 31, 2016, at 6:29 AM, user9253 wrote: > Eric, > Please verify that the "D-" data pin has a positive voltage even though it is labeled with a minus sign. > Also, I assume that computers do not have voltage on the data pins because that would interfere with data transfer. Is that correct or wrong? > Thanks, Joe > > -------- > Joe Gores ------------------------------------------------------------------------------------- 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.