2014-07-03, 07:12
It turns out the charger I have been using is subject to a certain amount of voltage drop, which explains a few random lockups. I don't have any other feasible chargers at hand, but what I do have, is a 12v 1A DC power source, and a TI PTR08100W switching regulator. That regulator can output up to 10A, accepts input voltage from 4.5V to 14V, and outputs 0.6V to 5.5V, and is up to 96% efficient.
Now, I have used that regulator many times with Li-Ion batteries, and it is rock solid stable even under a decently heavy load. I have not, however, used it attached to a plug-in type DC adapter.
Based on my rudimentary electronics knowledge, I believe that it should work. Power in must equal power out, and 12V@1A is 12 watts(obviously), so with the regulator it should be able to output [email protected]. Even if I assumed the regulator was only 80% efficient, it should still be able to handle [email protected].
So, am I thinking about this entirely wrong? Is there something about using a DC adapter that will make this not work?
Now, I have used that regulator many times with Li-Ion batteries, and it is rock solid stable even under a decently heavy load. I have not, however, used it attached to a plug-in type DC adapter.
Based on my rudimentary electronics knowledge, I believe that it should work. Power in must equal power out, and 12V@1A is 12 watts(obviously), so with the regulator it should be able to output [email protected]. Even if I assumed the regulator was only 80% efficient, it should still be able to handle [email protected].
So, am I thinking about this entirely wrong? Is there something about using a DC adapter that will make this not work?