[RFI] RFI-free Vehicle 5v USB Adapter?

[qrv at kd4e.com]

I'm going to try this, in a metal case, with twisted wire and toroids
on the input and output ...

https://www.amazon.com/Converter-DROK-Regulator-Inverter-Transformer/dp/B01NALDSJ0/ref=sr_1_3 



> Actually, KA7OEI is on the right track. Be prepared to be disappointed 
> with regards to RFI from Chinese dc-dc converter modules. Extensive 
> input and output filtering MUST be added if you want to eliminate a 
> significant amount of the conducted emissions garbage. And no, there 
> is no “progress” in the world of these modules. I have detailed 
> reviews of two such modules on my RFI page, with modification and 
> filtering recommendations. http://wb9jps.com/Gary_Johnson/RFI.html One 
> uses an LM2596, the other a MP1584EN. The latter is astoundingly bad 
> for several reasons...
>
> -Gary NA6O
>
>>
>> I haven't tried it, but KA7OEI has a page about suppressing RFI in these
>>
>> http://ka7oei.blogspot.com/2015/02/a-quiet-5-volt-usb-car-power-supply.html?m=1
>>
>