Position: Index > Filter Circuit >
  • IF_FILTER_FOR_CW

    2017-02-19 12:04:0370

    Circuit acts Iike variable filter having adjustable bandwidth, with enough gain to compensate for insertion Ioss in CW receiver. Used to isolate weak C...

  • 1_kHz_bandpass_filter_with_high_Q

    2017-02-19 11:23:2277

    This circuit uses two sections of a 3900 op amp to form a high-Q (Q=25) bandpass filter. Raytheon Linear Integrated Circuts, 1989, p. 4.274....

  • LOW_PASS_SUBAUDIO_FILTER

    2017-02-19 10:50:0171

    Gives flat frequency response from d-c to 1-cps cutoff, attenuation slope of 15 db per octave, near zero insertion loss, and good temperature stability...

  • SCRATCH_FILTER

    2017-02-19 09:12:2165

    Provides passband gain of 1 and corner frequency of 10 kHz for rolling off excess high-frequency noise appearing as hiss, ticks, and pops from worn rec...

  • CW_FILTER_FOR_INTERFERENCE

    2017-02-19 08:56:4974

    Audio bandpass filter, designed for connection between loudspeaker jack of receiver and external loudspeaker or phone, has half-power bandwidth of abou...

  • 600_TO_3000_Hz_TUNABLE_NOTCH_FILTER_CIRCUIT

    2017-02-19 07:34:3870

    This figure shows a notch filter that will tune roughly from 600 Hz to 3 kHz; it has been used by ham and SWL builders for a number of years. It is use...

  • The filter (regulator) circuit for different application are

    2017-02-19 07:13:3362

    Figure a ~ k show the filters or regulator circuits which can be applied to different frequency bands.It can adjustband-pass in 750Hz ~ 2500Hz.Language...

  • FILTERED_SAMPLE_AND_HOLD

    2017-02-19 03:06:4163

    It is often required that a signal be filtered pnor to sampling. This can be accomplished with only one device. Use any of the inverting and noninverti...

  • UNITY_GAIN_SECOND_ORDER_HIGH_PASS_FILTER

    2017-02-19 02:51:4267

    This filter circuit has a cutoff frequency of 2900 Hz with the values shown...

  • Filter Circuits

    2017-02-19 01:16:4772

    Filter Circuit Block Diagram We have learnt in rectifier circuits about converting a sinusoidal ac voltage into its corresponding pulsating dc. Apart f...

  • Duplex filter electric appliance circuit

    2017-02-18 23:56:5264

    There are two tasks for duplex filter: ① to absorb unwanted mixer output signals so that they do not reflect back to the mixer; ② to send wanted si...

  • Campbell passive duplex filter circuit

    2017-02-18 21:00:4764

    Campbell's paper gives the author another digital wonders example. That is, the achievement of a functional digital circuit is always superior to the i...

  • Cascaded_IC_low_pass_filters

    2017-02-18 20:07:5065

    Figure 7-15A shows two LTC1062 filters where the second input is taken directly from the dc-accurate output of the first filter. The recommended ratio ...

  • SELECTABLE_BANDWIDTH_NOTCH_FILTER

    2017-02-18 19:59:2162

    Circuit NotesThis notch filter, which operates at up to 200 kHz, uses a modified Wien bridge to select bandwidth over which frequencies are rejected. R...

  • Very Low Frequency Active Filter Circuit

    2017-02-18 19:24:1170

    As shown in the figure is a vlf active filter circuit. This is a Butterworth four-order active low-pass filter, which can be used to filter the interfe...

  • TUNABLE_NOTCH_FILTER_TO_SUPPRESS_HUM

    2017-02-18 17:29:3366

    Circuit NotesThis narrow-stop-band filter can be tuned by the pot to place the notch at any frequency from 45 to 90 Hz. It attenuates power-line hum or...

  • 8th_order_Chebyshev_bandpass_filter

    2017-02-18 15:55:2468

    This circuit uses an LTC1064 switched-capacitor filter to form an 8th-order Chebyshev bandpass filter, with a center frequency of 10.2 kHz and a bandwi...

  • RUMBLE_FILTER

    2017-02-18 14:10:5762

    Used when rumble from cheaper turntable or record extends above 100 Hz, causing disconcerting out-of-phase loud-speaker signals, Circuit is based on fa...

  • TWO_SALLEN_KEY_LOW_PASS_ACTIVE_FILTERS

    2017-02-18 13:45:2065

    These filters are designed for 10-kΩ impedance level and 1-kHz cutoff frequency, but the components can be scaled as required for other impedances and...

  • Full_duplex_300_baud_modem_filter

    2017-02-18 12:17:1761

    This circuit is an 8th-order 1-dB ripple Chebyshev bandpass, which functions as both an 1170-Hz originate filter, and a 2125-Hz answer filter. Only one...

  • The circuit diagram of 8 order low-pass filter (MAX291,TA750

    2017-02-18 10:46:2488

    8 order low-pass filter circuit is shown in the figure. This circuit is 8 order low-pass filter circuit adopting switched-capacitor. Changing the clock...

  • NOISY_SIGNALS_FILTER

    2017-02-18 08:48:5869

    This circuit filters noise, such as glitches and contact bounce, from digital signals. You can easily adjust the circuit for a wide range of noise freq...

  • RC Notch Filter (Twin T)

    2017-02-18 08:44:5863

    The twin T notch filter can be used block an unwanted frequency or if placed around an op-amp as a bandpass filter. The notch frequency occurs where th...

  • ACTIVE_ADJUSTABLE_BANDPASS_AUDIO_FILTER

    2017-02-18 07:42:5164

    Has Butterworth attenuation characteristics and 42 db/octave cutoff slopes. Output is 50 v rms with low distortion, and dynamic range over 100 db. Seco...

  • The one-time filter circuit based on RC circuit

    2017-02-18 06:14:2663

    (a) shows the status when the circuit has no load.(b) when it connects to the load, the features of the circuit changes with load....

  • REJECTION_FILTER

    2017-02-18 05:47:5264

    Circuit NotesThis narrowband filter using the 741 operational amplifier can provide up to 60 dB of rejection. With resistors equal to 100 K and capacit...

  • Power Frequency Noise Filter Circuit

    2017-02-18 04:55:5363

    As shown in the figure is a power frequency noise filter circuit. This circuit shows a kind of double T filter, which can filter out noise of 50 Hz (or...

  • SPEECH_FILTER

    2017-02-18 04:20:1570

    Pair of Bessel-type high-pass filters removes undesired components created by peak clipping during audio signal processing, Developed for use with auto...

  • SPECTRUM_ANALYZER_FILTER

    2017-02-18 03:55:5480

    Designed to study dynamic data recorded as frequency-modulated signals on magnetic tape. Filter circuit values give 1, 2, and 4-cps bandwidth in analyz...

  • BANDPASS_AND_NOTCH_FILTER

    2017-02-18 03:40:0067

    The Quad op amp MC4301 is used to configure a ftlter that will notch out a given frequency and produce that notched-out frequency at the BP terminal, u...

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