That is exactly what I am saying!! If I wanted a magnetic plug pair to use for my headphones I am out of luck because I would have to cut and splice to include it. So far that is not a huge issue, but still, it would be handy. The large reason to choose a magneticly held plug is that an unfortunate accidental tug does not cause any damage.

 

That is exactly what I am saying!! If I wanted a magnetic plug pair to use for my headphones I am out of luck because I would have to cut and splice to include it. So far that is not a huge issue, but still, it would be handy. The large reason to choose a magneticly held plug is that an unfortunate accidental tug does not cause any damage.

I liked using one for charging my phone because of two main issues:
1. I wore out the USB connector on one phone and from then on it was very hard to get it to charge.
2. It's much faster to connect to the charger, less than a second really. I keep the charger plugged in so when I get home I just have to move the end of the cord close to the adapter which stays in the phone USB C connector all the time.

I am not sure I understand your issue yet though. Do you mean you want a magnetic connector for your *audio* connector rather than a charging port, or do you mean you want to charge your wireless headphones using a magnetic connector for the USB charge port?
If it's the latter, it's definitely doable unless you have some very weird charge port. In fact, if it is one of the older barrel power connectors you can get a USB to barrel connector to solve that issue. Even a phone plug charger would work with a phone plug to USB adapter.

So unless it's the audio, I would think it would be very possible to use a magnetic connector.
If you provide more exact details of what you want to do, I'll look one up for you no problem, I am on there so often anyway looking up stuff for myself, neighbors, and friend that lives all the way in Los Angeles (2500 miles from me).
If it really is the audio, then you may have to splice, but it could be worth it too. I never ran into that but I could use that also I'll check that idea out, not a bad idea. Even if you don't really need that it sounds interesting.

I see now they have magnetic necklaces too, which don't need one of those lobster clips just the two magnets join and that keeps the necklace on.

I just took a quick look on Amazon and found an interesting connector pair. It has 5 pins and they are spaced 0.1 inch standard apart. That means you can use a small PC board to connect anything you want, one for each connector, or solder right to the pins. Didn't think of looking for that until you mentioned this.
It says "charge" but looks like it can be used for anything.

Guess what, I found an actual stereo magnetic connector for audio on "Angry Audio" site on the web. It's fully made so nothing to solder or build or anything.

The attachment shows more general purpose connector set.

 

Good day everyone!

Well, here are the results that I have been able to get at the moment, I hope someone is still interested in it. I also hope that this will be useful to someone in the future. After winding a custom coil and optimizing the TX side of the charging, I was able to make it work with flat coil 42mm in diameter and 10mm gap between the coils. But, unfortunately, the values obtained are still far from the required: efficiency is 41%, battery average charging current is 480mA (with 1A requested) and current itself not stable (fluctuates a lot). My opinion is that I am limited by the power of the transmitter itself. If this is the case, then this is a problem, as it means developing a new board and recalculating everything. In any case, I am very happy that it still managed to run. Thank you so much MrAl for your help! I need to think a little about what to do next with this project and whether this project makes any sense at all.

 

The connector shown is exactly what I was thinking about, except it is made for PCB installation on both sides. AND YES, it would be for wired headphones, not wireless. A wireless pair is not suitable at all.

 

Good day everyone!

Well, here are the results that I have been able to get at the moment, I hope someone is still interested in it. I also hope that this will be useful to someone in the future. After winding a custom coil and optimizing the TX side of the charging, I was able to make it work with flat coil 42mm in diameter and 10mm gap between the coils. But, unfortunately, the values obtained are still far from the required: efficiency is 41%, battery average charging current is 480mA (with 1A requested) and current itself not stable (fluctuates a lot). My opinion is that I am limited by the power of the transmitter itself. If this is the case, then this is a problem, as it means developing a new board and recalculating everything. In any case, I am very happy that it still managed to run. Thank you so much MrAl for your help! I need to think a little about what to do next with this project and whether this project makes any sense at all.

Oh 3 watts isn't that bad really, but at 41 percent I don't know if I like that. That means that at least 4.3 watts lost for every 3 watts transferred. Not groundbreaking by any measure.

You have any pics? I was wondering now what size wire you are using, and if you are using a magnetic core of any kind yet. Larger wire diameter and magnetic core should get it up higher. I have not done any calculations on what the max efficiency could ever be though. That would be a matter of constrained size and shape and materials for the core that are available.

You know what would be interesting, a rather large C core transformer core, with the two half separated of course and one winding on each half. it might make the pad and receiver thicker but it may be practical anyway.

In any case trying other ideas is probably the way to go.

 

The connector shown is exactly what I was thinking about, except it is made for PCB installation on both sides. AND YES, it would be for wired headphones, not wireless. A wireless pair is not suitable at all.

Check this out...
1/8 inch and 1/4 inch versions...

 

YES, MrAl, that is what I have been thinking about, but not as an add-on assembly. But I was hoping to find just the connectors that I can install on my cables and wires. I am quite able to do the very fine detail soldering that is required.