Rather than throw his old TV set away, Mark turned it (along with a few other parts) into a power supply for a plasma globe. Basic construction of the device is a flyback transformer with primary, feedback, and secondary coils. Acting like an inductor, the flyback is wired so that the feedback winding fires the gate of a transistor, which turns the primary winding off and induces current in the secondary winding. The secondary winding and plasma globe form an LC circuit that operates at its resonant frequency (20 to 30 kHz).
The Industrial Internet of Things may be going off the deep end in connecting everything on the plant floor. Some machines, bearings, or conveyors simply don’t need to be monitored -- even if they can be.
Wind turbines already are imposing structures that stretch high into the sky, but an engineering graduate student at the University of Notre Dame wants to make them even taller to reduce energy costs and improve efficiency.
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