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Low Pass filters are filters that allow the passage of low frequency signals and attenuate high frequency signals. How is this possible? Low pass and high pass filters can be made by replacing one of the voltage divider resistors with a capacitor. A low pass filter is shown below.The simplest filters can be implemented with RC and RL circuits. The key to analyzing them by inspection is to remember the behavior of inductors and capacitors FILTERS. Low –pass filter (integrator R.C. circuit). OBJECT: To steady the behavior and response of R.C. Circuit. APPARTUS: 1- Signal function generator. For AC (sound) signals, the capacitor will block low frequencies but pass high frequencies. (High pass filter). • For AC signals, the two resistors are in. Objective: The purpose of this experiment is to use a capacitor and a resistor to build and study the properties of a high-pass filter which blocks low A filter is used to remove given frequencies or an interval of frequencies from a signal. • Such an application would typically be to remove noise from a signal frequency characterizes the frequency response of the circuit (a high-pass filter, low- pass filter or band-pass filter). If you analyze the RC circuit of Low Pass Filter. High Pass Filter. Band Pass Filter. Figure 1: Passive RC filters. Output of LPF measured across C. Output of HPF measured across.