I have found that the capacitance of some capacitors like ceramic capacitors can actually change when a DC bias voltage is applied across them. The voltage need only be a few volts to make significant difference to the capacitance. Capacitors are used in filters and also decoupling capacitors, this means that it can cause change the cut-off frequency and the performance of noise filtering on the power supply rails.
Does this not mean that we should stop using cermaicceramic capacitors of this type? Or, or is there a way to mitigate this problem?