Position: Index > Filter Circuit >
  • F_V_converter_with_sample_hold_and_active_filter

    2017-02-27 23:44:2972

    Fig, 12-20 This circuit uses both a sample/hold and an active filter to minimize the ripple/response tradeoff. With the values shown, ripple (at V6) is...

  • The Butterworth 4-stage switch capacitor low-pass filter (TL

    2017-02-27 22:25:2276

    The filter circuit is shown in figure 5. The main part of the filter circuit consists of the Butterworth 4-stage switch capacitor low-pass filter (TLC0...

  • Universal_state_variable_filter

    2017-02-27 21:29:5568

    This circuit uses three op amps to form a universal state-variable filter. Compare this circuit and equations to that of Fig. 7-6. National Semiconduct...

  • The spectral character circuit of light filter

    2017-02-27 21:14:2264

    The sensor consists of the shell, light filter, heat electric element PZT, FET pipe, resistor and diode,etc. The light filter is installed at the windo...

  • Dc_accurate_low_pass_bandbass_filter

    2017-02-27 19:44:2765

    This circuit uses an LTC1050 and LTC1062 to form a filter that extracts ac information from a dc +ac signal. Figure 7-48B shows the bandpass-filter out...

  • TRACKING_LINE_FREQUENCY_FILTER

    2017-02-27 18:51:0379

    Improvements in commutating RC network filter extend dynamic range without sacrificing signal bandwidth, for reducing interference at fundamental of po...

  • Q-multiplier filter circuit

    2017-02-27 17:09:0078

    This circuit is selective for the tuning adjustment between two closely spaced tones audio. The frequency is dependent on the selective value capacitor...

  • 2 ~ 33MHz band-pass filter circuit

    2017-02-27 17:05:3964

    Band-pass filter is to pass all frequencies which are higher than for those low-end cutoff frequency and are lower than the high cutoff frequency. The ...

  • The fourth-order low -pass filter circuit with capacitor ele

    2017-02-27 14:41:5964

    The figure shows a high-order low - pass filter circuit using a LM348 quad operational amplifier. For example fc = 20kHz, filter transfer coefficient H...

  • BIQUAD_FILTER

    2017-02-27 13:52:2962

    Circuit NotesThe biquad filter, while appearing very similar to the state-variable filter, has a bandwidth that is fixed regardless of center frequency...

  • active filter circuit

    2017-02-27 13:05:4567

    Its core frequency fo=3.4kHz,notch frequency fc=9.5kHz,quality factor Q=3.4.AS for high frequency filter,coefficient of transmission is 0.1;as for band...

  • STAET_VARIABLE_FILTER

    2017-02-27 11:44:4063

    The state variable filter shown consists of only three op amps and a few passive components. It provides several key features. These include the abilit...

  • 1_MHz_bandpass_filter_insertion_loss_tester

    2017-02-27 11:29:3762

    1 MHz bandpass filter insertion-loss tester. The test is performed by sweeping the amplitude of the input signal and comparing the envelopes of the inp...

  • Usual band-pass filter circuit diagram

    2017-02-27 11:29:2566

    In this circuit, the R1 value is decided beforehand, the value is similar to the singal source internal resistance r. The principle of parameters selec...

  • First Order Low Pass Filter

    2017-02-27 11:20:4668

    Here an explanation of the operation of low pass filter was made, the operation principle of active low pass filter was made, of active low pass filter...

  • Notching filter circuit with variable Q

    2017-02-27 10:47:2560

    A notch filter circuit with a variable quality factorThe notch filter circuit uses two LM110 or SN72310 operational amplifiers as voltage follower, and...

  • High Q value trapped wave filter circuit

    2017-02-27 10:19:2461

    The high Q value trapped wave filter circuit is as shown in the figure. Because the double-T network filter can have the better attenuation characteris...

  • IC_notch_filter

    2017-02-27 09:26:3262

    This circuit shows an LTC1062 and an LT1056 connected to form a notch filter. Figure 7-17B shows the frequency response for a 25-Hz notch filter using ...

  • EQUAL_COMPONEHNTS_SECOND_ORDER_HP_FILTER

    2017-02-27 08:28:4061

    This filter circuit uses equal value components and is shown for 1500Hz.The values can be scaled for other frequencies.R=R1R2=2R1C=C1=C2...

  • FIFTH_ORDER_CHEBYSHEV_MULTIPLE_FEEDBACK_LOW_PASS_FILTER

    2017-02-27 08:18:0465

    The low bias currents permit high resistance and low capacitance values to be used to achieve low frequency cutoff. fc=10 Hz, Avct =4, Passband ripple ...

  • AUDIO_NOTCH_FILTER_FOR_SHORTWAVE_RECEIVERS

    2017-02-27 07:59:1263

    The notch filter can be added to just about any receiver to attenuate a single frequency by more Lhan 30 dB. This filter should be handy for reducing h...

  • Trapped wave filter circuit uses the operational amplifier a

    2017-02-27 07:40:2864

    The trapped wave filter circuit which uses the operational amplifier (composed of two LM110 or SN72310) as the voltage follower is as shown in the figu...

  • Third-Order High-Pass Filter

    2017-02-27 07:05:1362

    This report focuses on active third-order high-pass filter design using operational amplifiers. High-pass filters are commonly used to implement high f...

  • CAPACITORLESS_NOTCH_FILTER

    2017-02-27 06:49:0963

    The notch frequency for the filter is set by fnotch+[(ALP/AHP)×(RZ2/RZ1)]×f0where ALP and AHP are the gain from input to low-pass output at...

  • Capacitor fourth-order low-pass filter circuit diagram

    2017-02-27 06:45:1462

    Capacitor fourth-order low-pass filter circuit is shown as below. The circuit uses an LM348 op amp four high-level low-pass filter circuit. For example...

  • Norton_bi_quad_filter

    2017-02-27 06:07:5862

    This circuit shows both sections of a dual Norton used to form a bi-quad filter. Figures 11-15B and 11-15C show the design equations and bias equations...

  • TC9OA49D digital comb filter Y/C separate circuit

    2017-02-27 05:10:3561

    The TC9OA49D is designed as one kind of digital comb filter Y/C separate circuit which is produced by the TOSHIBA company, and this device can be used ...

  • Bandpass filter circuit

    2017-02-27 03:13:4062

    This circuit should determine the value of the R1 aforehand which is similar to the signal source resistance r1/ The principle of parameter selection i...

  • FSK Filter circuit

    2017-02-27 02:59:4463

    FSK or Frequency-Shift Keying is a form of frequency modulation in which the modulating signal shifts the output freq. between predetermined values. If...

  • PROGRAMMABLE_ANALOG_FILTER

    2017-02-27 02:52:5164

    The circuit in the figure shows how an analog, digitally programmable filter can be built using a UAF42. This monolithic, state-variable active filter ...

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