Capacitor is one of the basic components in electronic circuits and has important and widespread uses. According to application classification, most capacitors are often divided into four types:
AC coupling, including bypass (passing AC and blocking
DC); decoupling (filtering AC signals or filtering out high-frequency signals superimposed on DC signals or filtering out power supplies) , low-frequency components in reference power and signal circuits); active or passive RC filtering or frequency selection networks; analog integrators or sample-and-hold circuits (capture and store charge). This series of courses conducts in-depth research and discussion on the selection and use of capacitors.