How to keep your inventions from blowing up

Prolific maker Stephen Hobley has an interesting idea for protecting your wall-powered projects from self-destructing: add a lightbulb in series with them. The lightbulb acts like a current-limiting resistor, preventing your device from drawing more power than it can handle.
Note that this is not the same thing as using a fuse (which you should also do). The lightbulb hack works by restricting the maximum amount of current a device can draw, while a fuse cuts off the flow of power if it becomes too great.
Read the Full Story » | More on MAKE » | Comments » | Read more articles in hacks | Digg this!Source: http://blog.makezine.com/archive/2010/12/how_to_keep_your_inventions_from_bl.html
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