Hello,Questions about CN0350:1. How large a capacitor can be used to build other ranges of circuits.2. Can the horizontal axis time be changed only according to the sampling rate and sampling amount? Can I measure larger time scales?Questions about CN0407:1.Verify that the power suppiy is piugged in , please see the picture. What is the reason for this situation, how should I solve this situation.Finally, I would like to consult, I want to measure the current and voltage generated by the piezoelectric electrode. The range of the current measurement of Fei'an may not be enough. What type of board I need to purchase can measure a large amount of current (microampere, nanoamperes). If I want to measure the voltage generated by the piezoelectric electrode, I need to buy what type of board.Thank you for your answer, thank you.5023.图片.zip
With regards to your questions for CN0350:
1. The size of the capacitor depends on the sensitivity and range of your piezoelectric sensor and your desired output voltage swing.
where Sa = sensor sensitivity, delta(a) = acceleration range, delta(V) output voltage swing.
2. Yes, to measure larger time scales, you will have to increase the number of samples.