Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Why the polarity of the 1U clectrolyte in this circuit is this?Why can't be tied with the other polarity?
The right hand side of the capacitor is at 1.8 volts. The Left hand side of the capacitor is probably less than 1.8 volts due to the load the microphone presents. .
How to calculate the voltage value 1.8V? Why is 1.8V?
The 1uF capacitor is so big that it produces a cutoff frequency of 6Hz which is stupid.
Use a 330nF (0.33uF) film capacitor for 18Hz or 220nF (0.22uF) for 27Hz which does not have polarity.