https://www.es-forum.com/Digital-converter-for-t-v-problems-help-appreciated-tp1553564p1553594.html
O.k. - I'm confused. I thought that a "switching power supply" was any power supply that transformed one voltage into another (usually lower) voltage- but apparently there is more to it than that? What I'm now finding out is that the power supply on the Digital Adapter could actually be...a linear power supply??
Here I was assuming that the external power supply of my troublesome laptopwas also a switching power supply - but could that actually be linear as well?
Why do I seem to get such strong indications that these power supplies (andoften the appliances attached to them) are generating a pretty ample amount of RF if these power supplies are in fact linear?
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> O.K. - I just went into my brother's room and copied down what it says onthe Motorola power "brick". I'll try to relay only the relevant info - itlooks like a switching power supply:
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> INPUT: 110 - 127V ~ 60Hz 0.25A
> OUTPUT: +12V - 750mA
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> Also, on the Digital Adapter itself, right where the cord from the power supply plugs in - it says "+12V DC IN"
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> So am I good for switching to a linear supply (that is - if I can pull itoff)?
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> ~Svetaswan
>
> --- In
[hidden email], "Marc Martin" <marc@> wrote:
> >
> > > The power supply is an external "brick"? You need to look at how many
> > > volts and amps it is, and then find a linear power supply with the same
> > > volts and at least as many amps (or more). Then you have to find an
> > > adapter so you can plug it into the back of your box.
> >
> > Also, before starting any of this, you should see if your power supply
> > actually is a switching power supply. Either it would say so on the
> > label, or it would say that it works on all voltages (e.g. 110v - 230v).
> >
> > Also, you need to check and see if the center of the output plug is
> > "+" (it should say all this on the label of the power supply).
> >
> > Then you need to look around for someone selling a linear version:
> >
> >
http://www.powersupplydepot.com/listitems.asp?dept=37&main=1> >
> > (anyone -- does he want a regulated or unregulated power supply?)
> >
> > Marc
> >
>