|
I’m a novice, know very little about electronics, so here goes.. I’ll soon be installing a new head unit in my car, one with Apple CarPlay that charges your phone as you use it. The USB output (USB Type A) for the new head unit is 1.5 amps. How can I tell if this will be enough to safely: - charge an iPhone XR using a standard Apple lightning cable - power a separate fan that runs at 2.5 watts Assuming I buy the proper USB splitter (ie one that splits into a data connection for the phone and a separate power-only connection for the fan), would this work? Or would it be too much draw on the head unit and blow a fuse or something? Here are all the products in question if that helps: - Head unit: either Pioneer AVH-1550NEX or Kenwood DDX6706S - both rated at 1.5 amps as far as I can tell - fan: iKross USB Fan USB Mini Desktop Office Fan with 360 Rotation - Black for PC Computer Laptop Chromebook Ultrabook https://www.amazon.com/dp/B011SZ0COE/ref=cm_sw_r_cp_api_glc_fabc_P.4cGbHWV8SSQ?_encoding=UTF8&psc=1 - iphone XR Any help is greatly appreciated. Thanks! |
January 22, 2021 |
|
It can take up to 2.75W (2.50W on average), so, over 5V, it takes a current of 2.75 W / 5 V = 0.55A. Your iPhone may not charge as fast, or not charge at all, but since your power unit can deliver up to 1.5A, the fan should turn on. Note that a user mentions that plugged with its Mac, neither of the two work (from a standard Apple USB cable). |
January 23, 2021 |
No answers yet. Contribute your answer below!
You must log in or create an account (free!) to answer a question.
Anyone can ask a question.
Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.
CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.
We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.
Acceptable Questions:
Unacceptable Questions:
Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!
CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.