Passive Filter And Active Filter. Passive filters consume the energy of the signal but no power gain is available. Only passive filters use inductors.
First order all pass active filter is depicted in the figure 1. When the active filter reaches its limit it won t overload. While active filters have a power gain.
They cannot bring energy into the circuit.
A passive filteris a kind of electronic filter that is made only from passive elements in contrast to an active filter it does not require an external power source beyond the signal. As against a passive filter uses passive components like resistor inductor and capacitor to generate a signal of a particular band. An active filter can add energy into the circuit and also control current. Passive filters consume the energy of the signal but no power gain is available.
