출처 : https://www.electronics-tutorials.ws/filter/filter_2.html Passive Low Pass Filter A Low Pass Filter is a circuit that can be designed to modify, reshape or reject all unwanted high frequencies of an electrical signal and accept or pass only those signals wanted by the circuits designer In other words they “filter-out” unwanted signals and an ideal filter will separate and pass sinusoidal in..

출처 : https://www.electronics-tutorials.ws/filter/filter_1.html Capacitive Reactance Capacitive Reactance is the complex impedance of a capacitor who’s value changes with respect to the applied frequency In the RC Network tutorial we saw that when a DC voltage is applied to a capacitor, the capacitor itself draws a charging current from the supply and charges up to a value equal to the applied vo..