Back in October I was pondering the creation of accurate micro-voltages from a microcontroller. What makes this so difficult is the voltage offset created by current in the microcontroller bond wire, amongst other things. Diagram note – I have got a sneaky feeling the capacitor was returned to the opposite rail in each case. Anyway, ...
This story continues at Creating an accurate low voltage using PWM
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from Electronics Weekly https://www.electronicsweekly.com/blogs/engineer-in-wonderland/creating-accurate-low-voltage-using-pwm-2-2018-02/
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