26 Jan
2004
26 Jan
'04
1:45 p.m.
On Sun, 2004-01-25 at 21:15, Lyos Norezel wrote:
Doc... this is a BAD idea... I've fried numerous
devices by using the
wrong power rating... even if it was only 1mA off. The voltage almost
never matters... as long as the power is correct. Hope this gets to u
before you fry your machine.
Lyos Gemini Norezel
No offense meant, but you have it entirely backwards.
Assuming that there isn't an explicit problem (eg. the
object-to-be-powered has a short or will otherwise consume excess power)
the VOLTAGE is all that matters, assuming that the amperage-capacity of
the power supply is accurate.
You can run the tiniest 12V-nominal appliance from the hugest car
battery.
What Doc did is perfectly reasonable. And even if the JetDirect develops
a dead short inside, the new power cube is only 20% more capacity,
hardly increasing the fire hazard (more than appliances already are :-)
tomj
Doc Shipley <doc(a)mdrconsult.com> wrote:
Funny coincidence, there. I just hacked a Sprint CAD-1000 AC adapter
onto a JetDirect Ex+ last night. The receptacle of the JD is odd, so I
had to pull the board and solder the adapter direct. Other than that,
it's the right voltage, and a little over-amped (1A vs the JD's rated
800mA).