~Free Energy~

reply to post by joshuaatkinson

Please stop spamming old threads!

Allways the same talk about laws here and
laws there. Break them i say.
The only problem is how to get
away with it.......

I don't think we humans understand electricity like we seem to think we do.

Originally posted by Ingolf

I wonder, here in Europe, we have 220volts and 380 volts appliances. Some work from 10-1000Watts. The minimum you get is 220v 50w. A ton of my appliances, TV, Video, Computer, etc etc has a transformer which will lower the volts and watts by magnetism, since these work at 9v and 12v, 50w. Is it really neccessary to have this transformer at all? How about storing that energy instead of just throwing it away?

The transformer is the most efficient electrical machine known at up to around 95% efficient in the best cases. Switchmode power supplies can approach those figures as well but reliability and life expectancy is their downfall when compared to a simple mains transformer. Apart from 5% lost due to hysteresis, copper losses and magnetic fringing, the input power makes it to the output. Think of a transformer as an 'electrical gearbox' IE 220V, 50W in you get almost 50W out at whatever voltage the secondary is wound for and energy is not discarded.

50W in @ 220V~ (RMS) means the primary current is 227mA (RMS)
50W x 0.95 = 47.5W out and @ 12v~ output the secondary current will be about 4A

Whoops - very old thread