Posted by
Svetaswan-2 on
URL: https://www.es-forum.com/Digital-converter-for-t-v-problems-help-appreciated-tp1553564p1553613.html
--- In
[hidden email], "Marc Martin" <marc@...> wrote:
>
>
> Yes, now THAT is a switching power supply. :-) If you could find
> a power supply that only works for 120V 60Hz input, and outputs
> 19.5 V with 3.34 (or more) amps, then that would be a non-switching
> equivalent. And you may need to find a plug adapter so you can
> plug it into your laptop.
--------->So would finding a non-switching equivalent power supply reduce the "harmful emissions" coming out of the laptop itself - and lead to a moretolerable computer?
I'm pretty sure that this laptop is out-of-warranty - so from that standpoint, at least - I can "experiment" with the power supply and other options. I guess I also feel free to "tinker" with Comcast's digital adapter, sinceit was provided free-of-charge. But there is no such freedom with newly-purchased appliances. For example, if I bought a Macbook Pro - and wanted to subsitute the switching power supply with a linear power supply - it would automatically void the warranty. Voiding warranties is definitely something that I want to avoid - especially with something as expensive as a Macbook Pro! ~Svetaswan
>
> I would think that any AC/DC power transformer is going to produce RF
> noise, not just the switching kind.
-------->So is it a matter of degree? Is it that all (AC/DC) power supplies produce RF noise, but the switching power supplies just produce a lot more of it? Or is it that switching power supplies generate higher-frequency RF noise than their linear counterparts? ~Svetaswan
>
>
> Well, I'm sure there is an EMF protection device that you could probably
> stick onto the power supply that would reduce your symptoms. The problem
> is that you'd probably have to try about 10 different ones (or more!)
> before you found one that works well for you. Although maybe fewer
> if you just stick to the ones that have worked for other eSens
> members.
>
> Marc
>
------->Speaking of protection devices - I just ordered some more products from emfblues.com. I've had mixed results with their products (for the sake of brevity and conserving my limited energy, I won't get into specifics) - but I ordered some different products than what I had ordered previously...we'll see how it goes. I plan to test at least a couple of the products on the digital adapter.
If the emfblues products don't do the job, I'll try to branch out (if I canafford it) and try the products that you and others have mentioned.
Also...could plugging the digital adapter into a Furman strip make a significant difference? Or could shielding the skinny cable improve things (one of those "emf protection" websites sells a bunch of different shielding materials - cable shields being one)? Or putting some type of shielding over the adapter itself?
Also - I don't have a good concept/understanding of this, but it's my understanding that devices that operate off of DC current, and/or are attached to an AC/DC adapter - are not "grounded". Allegedly, this could result in the electrical charge "floating" to high levels, and could contribute to symptoms for some e.s.ers. I wonder if I tried "grounding" the device, would that make a difference?
I also noticed that the power supply's plug is not 3-pronged (grounded) - although it is plugged into a surge protecter that *is* 3-pronged. Does plugging a 2-pronged device into a 3-pronged power strip "ground" the device?
~Svetaswan