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dgilbert
Good Bye My Friend
Premium,MVM
join:2002-06-15
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| reply to DocWonder
Re: Cayman 3220-H running hot with stock Power Ada
the BEST thing to do is to get a couple of small muffin fans and mount them over the vent on the top of the 3220(a little glue will go a long way). have them blow in the unit, this will keep it cool as a cucumber. run these fans off the proper size transformer, these are readily available at radio shack or other electronics stores/depts.
varying the supply voltage is NOT the answer.
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If you can read this, thank a teacher..........and since it's in English, thank a soldier. | |
DocWonder
join:2003-01-11
Miami, FL
1 edit | lol... aftermarket fans for the cayman router? You'd think cayman/netopia would at least suggest or recommend a solution. Then again, maybe it is well within specs for the cayman to run that hot. My real question is what is teh best power adapter. Let's put together a list of what's been tried and its results.
9V 1.0 mA Linear Power adapter - result: hotter than stock adapter. Conclusion: Using a linear power adapter with lower then recommended current results in excessive heat. Let's see if this makes sense: Ohm's law states V=I*R (V=voltage, I=current, and R=resistance (heat))
V=9V and I=1.0,
R=V/I which means R=9
the stock adapter is also 9 volts, but with a I=1.5, therefore in that case the R=9/1.5, R=6.
By following ohms law, we can conclude that the solution may be to purchase a power adapter with a higher Amps. Throw in the SWITCHING power adapter and we may have a more stable solution. So what do you guys think?
But just anotehr thought... that's only as far as the power adapter... once we get into the cayman router tho, it may be entirely different... the router has fixed resistors inside, undoubtly rated for a certain Ohm. The higher the ohms the hotter the unit gets. providing a power adapter that as a lower current has proved to increase the amount of resistance. R=V/I... anotehr solution would be to lower teh voltage. But would teh cayman work if you lower the voltage? | |
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