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VU meter DIY kit with LEDs | LM3915N-1 LED driver
This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels into the LEDs just like any audio level bar indicator will do. It is simple ...
Abstract: Aiming at the difficulty in the estimation of indicator diagrams for electrical parameters of beam pumping units (BPUs), a subspace-aided stable image representation (SIR) approach is ...
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