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In this post I will introduce the ever versatile Op-Amp. It is a tiny rectangle approximately 1 cm by 1cm by 0.5 cm in dimension. If you do robotics or anything electrical, you will rely heavily on this thing. What it can do: --------------------- An op-amp is your tool for the following: - amplifying a small signal (e.g. in microphones, electric guitars, and many measurement... read more