[mythtv-users] Issues with my HDHomerun: Resource temporarily unavailable

[Alistair Grant]

On Sun, Jan 4, 2015 at 8:24 PM, Ian Evans <dheianevans at gmail.com> wrote:
>
> Bowing down to those of you with more electrical knowledge, I see that the
> JTA0302B is a 2A power supply while Silicondust says it needs a 1A. But I do
> recall seeing people mention the JTA0302B in the 'dust forums.
>
> Going back to high school science I seem to remember amps are the "amount",
> while volts are the "presuure" of the power. So what exactly happens if I
> use 2A on something that calls for 1A?

The short answer is you'll be OK (but see my assumption below).

The important bits are:

* The voltage matches (you haven't mentioned them here, I assume
they're the same).
* The maximum supply current (2A in the example above) exceeds the
load requirement (1A in the example above).

Just to add to your analogy: I normally think of a tank connected to a
hose.  The voltage is equivalent to the height of the tank (the
available pressure).  The current is the amount of water that can
flow, i.e. the diameter of the hose.

However, we can't take the analogy too far - assuming the voltage is
correct and everything else is working as it should, the load will
only draw as much current as it needs, so over spec'ing the power
supply won't hurt.

Cheers,
Alistair