Passive filters use resistors combined with reactive components such as capacitors and inductors. The characteristics of niobium electrolytic capacitors and tantalum electrolytic capacitors are roughly comparable. Lower voltage applied may have positive influences for tantalum electrolytic capacitors. Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors. Capacitance of ceramic capacitors varies with temperature. LC networks with more inductors and capacitors. They consist of passive elements like resistors and capacitors. An electrolyte acts as the cathode of electrolytic capacitors. The rectified output is then smoothed by a filter consisting of inductors and capacitors. These capacitors combine features of electrolytic and electrochemical capacitors. They are intended for larger capacitance values compared to rectangular polymer capacitors. The industry switched back to using aluminum electrolytic capacitors. In ferroelectric Class 2 ceramic capacitors, capacitance decreases over time. Estimation is similar to wet electrolytic capacitors. These first sintered tantalum capacitors used a liquid electrolyte.