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Most generally a class of materials that are neither insulators or conductors in their natural state, but which can be manipulated via doping or electric fields to change their conduction state. Silicon, Germanium, and GaAs are some usual materials. The term is also used to speak about devices that are made from such materials, for example, a processor from Intel can be called a semiconductor.
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Why does touching LEDs' ground terminal light them dimly?
Today I was making a little circuit with an LED strip (3 LEDs in series) and I noticed a curious fact that I am not sure how to explain. I wasn't sure of the operating voltage of the LED strip, so I t …