Arduino Controlled CNC 3D Printer1

Zener level-shifter drives high-side switch

Microcontrollers, the heart of all modern electronic gadgets, are increasingly powered with sub-5V power supplies. This complicates the control of external loads powered by higher voltages. The trend towards low voltage supplies is dictated by the fact that modern digital and mixed-signal integrated circuits are CMOS based, and with an ever increasing demand for higher […]

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