We have seen that accurate capacitance measurements can be made at audio frequencies ( generally 1 KHz) using a variety of bridge circuits, described in section 5.5.1 of this text. It is often important to characterize capacitors at radio frequencies and at ultra low frequencies, as well as dielectrics used as electrical insulation, their are also voltage variable capacitance
We will describe below some of the non-bridge means to measure capacitor and to characterize their equivalent circuits.