In parts 1 through 3 I described the construction of the transformer we needed to generate the 10Amps AC. We still had to drive the transformer. Although I said I wasn’t going to discuss the complete ...

They generate AC current just like the others, but it’s then converted to DC (Direct Current), and then inverted back to AC. The conversion and inversion is controlled by circuitry which acts like a ...

You could soon be charging your mobile phone using your shoe thanks to researchers in the US who have created a tiny device that generates electric power as it is stretched and then released. The ...