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Power conversion
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
Thank you for being with us and sorry for any inconveniences this could caused.
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Power conversion
by Stevers » Fri Aug 05, 2005 11:01 am
how do I convert 2.5 watts at 120 volts AC to ______watts at 12 volts DC
- Stevers
by Guest » Fri Aug 05, 2005 6:35 pm
If your converter/inverter were 100% efficient, it would still be 2.5 w. Some power is wasted in the conversion device, so expect more power going in the input side than comes out the output side. I can't suggest a factor, it will be device dependent.
The current however will scale (volts x amps = watts), so the dc current to produce 2.5 w at 12 V will be 10x the ac current at 120 V (again assuming 100% efficiency, 70-80% is probably more realistic.)
The current however will scale (volts x amps = watts), so the dc current to produce 2.5 w at 12 V will be 10x the ac current at 120 V (again assuming 100% efficiency, 70-80% is probably more realistic.)
- Guest
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