How to surpress radio interference?

[gmaz]

I have bought this USB power unit to run a dashcam and charge my phone, but when it is connected I seem to lose some of my DAB stations, and weaker FM stations drop out. The comments on amazon mention interference. Is there any way to effectively shield it? I tried wrapping in foil but that didn't work.



https://www.amazon.co.uk/Converter-Voltage-Paralle...

[OldGermanHeaps]

Buy a good one, not poorly designed chinese crap.

[gmaz]

OldGermanHeaps said:

Buy a good one, not poorly designed chinese crap.

Any suggestions?

[OldGermanHeaps]

I got a couple of good ones from RS after dozens of ebay/amazon disappointments, but I can't find the no on the site just now. I have a spare in the shed, i'll have a look.

[Dr Doofenshmirtz]

For my camera I bought a plug socket USB adapter from Poundland, extracted the circuit, soldered on some leads and wrapped it in heatshrink - works a treat and no interference.
These things have chokes inside them and can be electrically noisy, but the Poundland ones are fine.

[gmaz]

Dr Doofenshmirtz said:

For my camera I bought a plug socket USB adapter from Poundland, extracted the circuit, soldered on some leads and wrapped it in heatshrink - works a treat and no interference.
These things have chokes inside them and can be electrically noisy, but the Poundland ones are fine.

Thanks, I'll probably do something similar. I got a good quality USB charger but the circuit was glued in and I didnt want to break it open so I got a female 12v accessory socket which I can hide away.

https://www.amazon.co.uk/gp/product/B00Q2GFP4M/ref...

https://www.amazon.co.uk/gp/product/B01HD6UEU4/ref...