My mechanic showed my some electronics from inside a fuel tank. Two wires have rubbed on each other and fused together (probably the subject of a made by monkeys column.) The customer complained that the fuse kept blowing so our repairer replaced it with a self-resettable fuse in a 40 amp circuit. It takes little imagination to figure out the wires will heat up inside the fuel tank and solve the customers problems for them PERMANTENTLY. Maybe this would be a case of repaired by murderers!
The second item of re-engineering by monkeys is a transformer replacement in a filament power supply running 480 volts, using a triac as the regulating element. It has a 480 primary transformer with a 32 volt CT secondary to supply the regulating circuitry. This is not a standard item anywhere so the repairer figured why not just replace the failed transformer with a 230 volt primary 64 volt secondary. Fine in theory except the matter of insulation, and the matter of 480 creating arcs that are hard to quench. There is also the fact that this unit is controlled through low voltage control circuits for operator interface, any of which might suddenly break down when 480 volts shorts through to the secondary side.
These fellas must have got their re-engineering degree from Shade Tree University.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.