Position: Index > Filter Circuit >
  • Op_amp_notch_filter_high_Q

    2017-02-22 01:53:2564

    This circuit uses a single LM102 in the twin-T configuration to form a high-Q notch filter. Figure 10-42B shows the filter characteristics at 60 Hz. Ot...

  • FILTER_TYPE_SSB_GENERATOR

    2017-02-22 01:15:5163

    Carrier is generated by FET crystal oscillatorQ1 followed by buffer Q2. Modulating wave is applied to HEP 580 connected as two-stage audio amplifier fe...

  • TOUCH_TONE_BAND_REJECT_FILTER

    2017-02-22 00:33:4463

    Cascaded notch filters with active limiter at output provide 20-dB attenuation of either low (697-941 Hz) or high (1209-1633 Hz) groups of tones, as ai...

  • 1_kHz_N_PATH_NOTCH_FILTER

    2017-02-21 22:12:5581

    Combination of DG508 eight-channel CMOS multiplexer with low-pass and bandpass active filters provides 1-kHZ notch filter having Q of 1330 and 3-dB ban...

  • DIODE_SWITCHED_FOUR_CRYSTAL_IF_FILTER

    2017-02-21 21:19:0365

    Appiication of 9-12 VDC to control points A or B gives choice of two different selectivities for IF amplifier in amateur communication receiver.For 500...

  • Narrow-band filter circuit with the adjustable Q value and f

    2017-02-21 20:54:5763

    The narrow-band filter circuit with the adjustable Q value and frequency is as shown in the figure. This circuit is an active narrowband filter with ad...

  • TWO_SECTION_300_3000Hz_SPEECH_FILTER

    2017-02-21 20:05:1666

    An LM387 dual low-noise amplifier is used in an active filter. Both sections are used to produce second-order HP and LP filters, respectively....

  • Ordinary filter circuit diagram

    2017-02-21 18:33:3463

    In the ripple and noise susceptible circuit, it can add a filter to DC/DC input terminal and output terminal, it can reduce the ripple and noise. It ca...

  • CW_FILTER

    2017-02-21 18:26:5365

    Simple single-section parallel-tuned active filter uses negative-impedance converter or gyrator to replace hard-to-get inductor of passive code filter....

  • KA9270--the dual channel audio filter integrated circuit

    2017-02-21 18:25:5563

    1. The internal circuit and pin functions of KA9270 KA9270 contains the impedance buffer, low-pass filter, de-weight control motor, basic pole voltage ...

  • Band pass Filter

    2017-02-21 18:18:4768

    A band pass filter was designed for low insertion loss to help maintain the receiver noise figure. In keeping with this, NP0 ceramic capacitors were us...

  • RUMBLE_SCRATCH_FILTER

    2017-02-21 18:08:3364

    Used after pre-amp in high-quality audio system to improve reproduction of phonograph records. Two-pole Butterworth design has switchable breakpoints p...

  • Power Noise Filter Circuit

    2017-02-21 17:27:1365

    The power noise filter(PNF) is a new type of device which can effectively reduce the alternatingelectric wirenoise andimprove the electric device's cap...

  • Single Op-Amp Bandpass Filter

    2017-02-21 15:28:4663

    A bandpass filter passes a range of frequencies while rejecting frequencies outside the upper and lower limits of the passband. The range of frequencie...

  • Anti-RF filtered power supply 12-14 Volt / 3A

    2017-02-21 14:05:0362

    This power supply is dedicated for use with rf equipments like, linear amplifiers, transmitters, receivers, and in every application that clean an-nois...

  • VARIABLE_LOUW_PASS_FILTER

    2017-02-21 13:24:0263

    This second-order low-pass filter uses a 741 op amp and is tuneable from 2.5 kHz to 25 kHz.This circuit is useful in audio and tone control ap-plicatio...

  • DZW75-48/50(50II) high frequency rectifying filtering circui

    2017-02-21 12:47:4162

    Positive and negative alternation pulse voltage of high frequency transformer T’s secondary induction pass full wave rectifier composed of high frequ...

  • FIVE_POLE_ACTIVE_FILTER

    2017-02-21 12:33:3562

    The above realization of a type D3 receive filter is accompished using eight OP-08's. As can be seen from 1he response curve the 30dB attenuation in th...

  • Dc_accurate_low_pass_Bessel_filter

    2017-02-21 07:02:2863

    This circuit uses an LTC1050 and LTC1062 to form a low-cost 7th-order 10-Hz low-pass filter, where amplitude and phase response closely approximate a B...

  • PUSH_PULL_OUTPUT_WITH_LATTICE_FILTERS

    2017-02-21 05:38:1863

    Preferred for frequencies above 30 Mc because lattice arrangement without transformers is much easier to construct and align than standard push-pull ci...

  • TPA2OOOD2 No filter D type audio power amplifier integrated

    2017-02-21 05:11:5362

    TPA2OOOD2 is a kind of new D type audio power amplifier integrated circuit. It does not need a filter port and beproduced by Texas Instrument Company i...

  • MC141628 digital comb filter integrated circuit diagram

    2017-02-21 04:56:5065

    MC141628 is the digital comb filter IC produced by Motorola in America, and it is used in a wide range of domestic and imported large screen color TV, ...

  • The filter circuit of the output return circuit

    2017-02-21 04:45:1861

    In the frequency range of 0.15~1MHz, the harassment mainly exists in the form of common mode, in the frequency range of 1~10MHz, the harassment mai...

  • Operation multi-feedback filter circuit

    2017-02-21 01:35:0762

    Multi-feedback filteris a universal, low cost and easy implementing filter. Unfortunately, the calculation of designing is a littlecomplex, here withou...

  • Active dual two-stage bandpass filter circuit

    2017-02-20 23:12:5263

    The active dual two-stage bandpass filter circuit is as shown in the figure, the center frequency is 1kHz, the quality factor Q=50, the gain Kv=100 (eq...

  • CERAMIC_FILTER_I_F_STAGE

    2017-02-20 23:12:1463

    Article covers design procedure using transistor signal handling curves. Collector resistance is used to minimize drift.-W. Rheinfelder, Using Transist...

  • 1_kHz_4TH_ORDER_BUTTERWORTH_FILTER

    2017-02-20 19:49:2562

    The filter is a simplified state variable architecture consisting of two cascaded 2nd-order sections. Each section uses the 360° phase shift around th...

  • Subwoofer filter

    2017-02-20 19:46:1767

    Description. Here is the circuit diagram of an opamp based subwoofer filter. Audio frequencies below 200Hz are considered to be in the subwoofer range....

  • 2nd Order Opamp Filters

    2017-02-20 18:31:1264

    The figures below illustrate using opamps as active 2nd order filters. Three 2nd order filters are shown, low pass, high pass, and bandpass. Each of th...

  • DIGITALLY_TUNED_LOW_POWER_ACTIVE_FILTER

    2017-02-20 17:38:5364

    Circuit NotesConstant gain, constant Q, variable frequency filter which provides simultaneous low-pass, bandpass, and high-pass outputs.With the compon...

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