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  2. RLC circuit - Wikipedia

    en.wikipedia.org/wiki/RLC_circuit

    RLC circuits have many applications as oscillator circuits. Radio receivers and television sets use them for tuning to select a narrow frequency range from ambient radio waves. In this role, the circuit is often referred to as a tuned circuit. An RLC circuit can be used as a band-pass filter, band-stop filter, low-pass filter or high-pass ...

  3. Low-pass filter - Wikipedia

    en.wikipedia.org/wiki/Low-pass_filter

    In this role, the circuit is often called a tuned circuit. An RLC circuit can be used as a band-pass filter, band-stop filter, low-pass filter, or high-pass filter. The RLC filter is described as a second-order circuit, meaning that any voltage or current in the circuit can be described by a second-order differential equation in circuit analysis.

  4. Cutoff frequency - Wikipedia

    en.wikipedia.org/wiki/Cutoff_frequency

    In electronics, cutoff frequency or corner frequency is the frequency either above or below which the power output of a circuit, such as a line, amplifier, or electronic filter has fallen to a given proportion of the power in the passband.

  5. Butterworth filter - Wikipedia

    en.wikipedia.org/wiki/Butterworth_filter

    A simple example of a Butterworth filter is the third-order low-pass design shown in the figure on the right, with = 4/3 F, = 1 Ω, = 3/2 H, and = 1/2 H. [3] Taking the impedance of the capacitors to be / and the impedance of the inductors to be , where = + is the complex frequency, the circuit equations yield the transfer function for this device:

  6. RL circuit - Wikipedia

    en.wikipedia.org/wiki/RL_circuit

    A resistor–inductor circuit (RL circuit), or RL filter or RL network, is an electric circuit composed of resistors and inductors driven by a voltage or current source. [1] A first-order RL circuit is composed of one resistor and one inductor, either in series driven by a voltage source or in parallel driven by a current source.

  7. Roll-off - Wikipedia

    en.wikipedia.org/wiki/Roll-off

    Roll-off is the steepness of a transfer function with frequency, particularly in electrical network analysis, and most especially in connection with filter circuits in the transition between a passband and a stopband.

  8. Chebyshev filter - Wikipedia

    en.wikipedia.org/wiki/Chebyshev_filter

    For a stopband attenuation of 5 dB, ε = 0.6801; for an attenuation of 10 dB, ε = 0.3333. The frequency f 0 = ω 0 /2π is the cutoff frequency. The 3 dB frequency f H is related to f 0 by: = ⁡ (⁡).

  9. Gaussian filter - Wikipedia

    en.wikipedia.org/wiki/Gaussian_filter

    The response value of the Gaussian filter at this cut-off frequency equals exp(−0.5) ≈ 0.607. However, it is more common to define the cut-off frequency as the half power point: where the filter response is reduced to 0.5 (−3 dB) in the power spectrum, or 1/ √ 2 ≈ 0.707 in the amplitude spectrum (see e.g. Butterworth filter).