On 16-02-2013 01:45, Arun Khan wrote:
On Fri, Feb 15, 2013 at 7:57 PM, Binand Sethumadhavan binand@gmail.com wrote:
I am thinking of something like a mobile charger that would plug in a regular 3-pin plug at one end and a computer at the other, and some software/sensor combo that would read the (DC) voltage at the computer end. If there is no voltage, there is no power in the mains and ergo - we are in the middle of a power outage, so take action. Know of something along these lines?
(idea is to detect power failures, while powered by a "dumb" UPS unit - one that cannot communicate with the a computer. Any other solutions/suggestions?).
Good idea. You could use one of those AC Mains to USB adapter/charger; which I think gives out 5V on the USB power line. A USB cable into the computer USB port should be a good starting.
-- Arun Khan
-------------- Complex Idea ------------------------------------------ Generally an UPS will have a led indicator of the power source AC/Battery check this http://electronics.stackexchange.com/questions/26101/connect-a-light-sensor-... now you can use the frequency generated as an input to the line-in of the pc
-------------- Simple Idea ------------------------------------------ Use an electomagnetic switch which switches on when the magnet is off This can be adapted to setting a signal on the USB/Serial Port
Surya Pratap