AUX / USB Interference

[greencode]

A bit annoying... When I have my phone plugged into both USB (charger via cigarette lighter) and AUX the I get really bad interference on audio playback. Unplug the USB then it's fine but I need that to charge the phone!

Never had this in any other car! Read a few other posts on here but there never seems to be a conclusion.

Any ideas?

 

[markplant]

I get a similar problem when I have my phone on charge in the van an it affects the radio with interference, was told its due to cheap charger , did wonder if a ferrite suppressor around the cable would help

 

[greencode]

I get a similar problem when I have my phone on charge in the van an it affects the radio with interference, was told its due to cheap charger , did wonder if a ferrite suppressor around the cable would help

I've tried 3 different chargers and they're from reputable manufacturers so I'm not sure that's the issue.

Read it could be to do with the grounding somewhere but no idea how to resolve that.

 

[Chris_D]

Ground loop.
Easily fixed via an isolator or plug-in audio filter.
Been through this years ago. Isolator worked to a degree but not fully so decided not to charge while aux plugged in.
It's because there are all sorts of electrical paths in the gubbins ur using grounding differently and causing induction voltage leading to interference.
Buy an anker usb charger and use that instead.

 

[greencode]

Ground loop.
Easily fixed via an isolator or plug-in audio filter.
Been through this years ago. Isolator worked to a degree but not fully so decided not to charge while aux plugged in.
It's because there are all sorts of electrical paths in the gubbins ur using grounding differently and causing induction voltage leading to interference.
Buy an anker usb charger and use that instead.

This is the one I'm currently using https://www.amazon.co.uk/gp/product/B00M6Q83B4 - The reason I liked this one is that it fits almost flush. Obviously though, if it doesn't work properly then I'll need to get the Anker one. Will this one suffice: https://www.amazon.co.uk/Anker-Charger-PowerIQ-Technology-Motorola/dp/B00VH84L5E

 

[Chris_D]

Ground loop.
Easily fixed via an isolator or plug-in audio filter.
Been through this years ago. Isolator worked to a degree but not fully so decided not to charge while aux plugged in.
It's because there are all sorts of electrical paths in the gubbins ur using grounding differently and causing induction voltage leading to interference.
Buy an anker usb charger and use that instead.

This is the one I'm currently using https://www.amazon.co.uk/gp/product/B00M6Q83B4 - The reason I liked this one is that it fits almost flush. Obviously though, if it doesn't work properly then I'll need to get the Anker one. Will this one suffice: https://www.amazon.co.uk/Anker-Charger-PowerIQ-Technology-Motorola/dp/B00VH84L5E

No sorry, i should have been clearer; I meant an anker external usb battery charger. the reason u have buzzing is because of all of the different voltage paths - car power supply, lighter charger supply voltage step circuit, phone supply. there's too much going on obviously which is leading to a ground loop.
Not everyone suffers from this, including me thankfully bu it could be anything/everything in that whole system of devices and wiring. Could also be that ur car isnt grounded perfectly.
Check with a multimeter from battery negative to a ground point on the car.

Try to borrow an external usb battery charger and test before buying one.
I use this one on my bike to power an iphone and i can leave the screen on permanently to use google maps. goes all day and beyond. Small and light enough to sit in a toptube bag without adding too much weight.

Anker PowerCore 10000 Portable Charger, One of The Smallest and Lightest 10000mAh External Battery, 10000mAh Ultra-Compact High-Speed Charging Power Bank for iPhone, Samsung Galaxy and More https://www.amazon.co.uk/dp/B019GJLER8/ref=cm_sw_r_cp_tai_8lt3xbPZWS9YB

 

[greencode]

Ground loop.
Easily fixed via an isolator or plug-in audio filter.
Been through this years ago. Isolator worked to a degree but not fully so decided not to charge while aux plugged in.
It's because there are all sorts of electrical paths in the gubbins ur using grounding differently and causing induction voltage leading to interference.
Buy an anker usb charger and use that instead.

This is the one I'm currently using https://www.amazon.co.uk/gp/product/B00M6Q83B4 - The reason I liked this one is that it fits almost flush. Obviously though, if it doesn't work properly then I'll need to get the Anker one. Will this one suffice: https://www.amazon.co.uk/Anker-Charger-PowerIQ-Technology-Motorola/dp/B00VH84L5E

No sorry, i should have been clearer; I meant an anker external usb battery charger. the reason u have buzzing is because of all of the different voltage paths - car power supply, lighter charger supply voltage step circuit, phone supply. there's too much going on obviously which is leading to a ground loop.
Not everyone suffers from this, including me thankfully bu it could be anything/everything in that whole system of devices and wiring. Could also be that ur car isnt grounded perfectly.
Check with a multimeter from battery negative to a ground point on the car.

Try to borrow an external usb battery charger and test before buying one.
I use this one on my bike to power an iphone and i can leave the screen on permanently to use google maps. goes all day and beyond. Small and light enough to sit in a toptube bag without adding too much weight.

Anker PowerCore 10000 Portable Charger, One of The Smallest and Lightest 10000mAh External Battery, 10000mAh Ultra-Compact High-Speed Charging Power Bank for iPhone, Samsung Galaxy and More https://www.amazon.co.uk/dp/B019GJLER8/ref=cm_sw_r_cp_tai_8lt3xbPZWS9YB

Ah ha. Already got one of those. Tbh, don't want to go down this route as it's a bit of a fadd so I'm going to have to figure out another way of doing all of this. Hummmm.

 

[greencode]

Just had a thought. Could it be anything to do with the Gaptech I have installed? Was just trying to think and I'm sure I used both USB and AUX before I had the Gaptech installed with no interference?!