Erlangen, Germany, October 23, 2009 -- Siemens is meeting the steel industry's growing demand for every higher performance levels in melting down scrap metal by launching a refined medium-voltage ...

This is an improved version of Anthony Smith’s designs for a latch on/latch off switch (see the whole series below). The new design switches a 120VAC load, and includes several much-needed details on ...

The easiest way of making a solar fan is to connect the solar PV panel to a DC fan of a matching voltage and power rating. This simple arrangement does work, but has few serious drawbacks: The system ...