Position: Index > Filter Circuit >

  • Low_pass_active_filter

    2017-02-16 15:55:4362

    This circuit uses an LM102 connected to form a basic low-pass filter (input capacitors in parallel and input resistors in series). The values are for a...

  • LOW_COST_CRYSTAL_FILTERS

    2017-02-16 15:32:4665

    Low-cost CB crystals can be used for these 9-MHz crystal ladder filters. Notice that the 27-MHz crystals (3rd overtone) are used on their fundamental f...

  • AM BCB (500 ~ 2000kHz) band-pass filter circuit

    2017-02-16 15:31:0366

    The picture shows the band-pass filter for AM broadcast band. This type of filter can be used for antenna and AM broadcast-band receiver’s antenna in...

  • SYNCHRONOUS_FILTER_FOR_ADF

    2017-02-16 14:47:5262

    Separates 130-cps motor drive voltage from voice frequencies in output of adf receiver-P. V. Sparks, Servo Filter and Gain Control Improve Automatic Di...

  • Band stop filter / notch filter resonant circuit

    2017-02-16 13:29:0663

    Band stop filter is a kind of band-stop filter with high Q value (referring to the narrow bandwidth). They are designed to filter out a single frequenc...

  • Bandwidth adjustable audio filter circuit with the 900Hz cen

    2017-02-16 11:30:2264

    This circuit uses the Wien-bridge, it has the adjustable bandwidth and the center frequency is 900Hz, if the 10K potentiometer's level is too low, ther...

  • Notch_filter_using_an_ECG947_dual_operational_amplifier_as_a

    2017-02-16 09:27:1761

    Notch filter using an ECG947 dual operational amplifier as a gyrator. The ECG947 is short-circuit protected and requires no external components for fre...

  • OPA2604 Constituted Third Order Low-pass Filter Circuit

    2017-02-16 07:26:4262

    The circuit is showed in the piture above. The circuit makes use of a JFET-inputhigh-fidelityoperational amplifierOPA604 and a dualop ampOPA2604compone...

  • Frequency adjustable bandpass filter circuit

    2017-02-16 07:12:3273

    The frequency adjustable bandpass filter circuit is as shown in the figure. This filter's resonance frequency can be adjusted through the coaxial poten...

  • Practical band-pass filter principle circuit diagram

    2017-02-16 07:03:1268

    In negative feedback branch, this circuit is a bandstop filter, then it only allow the frequency singal which is blocked down by feedback branch to pas...

  • Third-order asymmetric filter circuit

    2017-02-16 06:51:3463

    In the figure, thethird-order asymmetric filter has two ways of output UA1 and UA2, the former is high-pass filter output, and the later is the low-pas...

  • TURNTABLE_RUMBLE_FILTER

    2017-02-16 06:31:1167

    Many record players unfortunately exhibit two undesired side effects: rumble (noise caused by the motor and the turntable) and other low-frequency spur...

  • Common active power filter circuit diagram with steady perfo

    2017-02-16 04:30:5061

    The circuit is as shown, the new frequency fo=3.4KHz, the notch frequency fo=9.5KHz, the quality factor Q=3.4. For high frequency filter, the transfer ...

  • Voltage Controlled Filter SSM2044P

    2017-02-16 03:28:5264

    At this circuit the SSM2044 IC is used, a 4 pole voltage controlled filter designed for electronic music applications. On-chip voltage control of reson...

  • HIGH PASS ACTIVE FILTER COLLECTION

    2017-02-16 02:25:1668

    This is a collection of inverting and non-inverting active high pass filter circuits. I included one, two three, four and six pole filter circuits. You...

  • Durable Notch Filter With A Variable Q Value Circuit

    2017-02-16 01:50:2765

    The Durable Notch Filter With A Variable Q Value Circuit is shown below.Thisnotch filter circuituses two LM110 or SN72310 operational amplifier as volt...

  • Fed_forward_low_pass_filter

    2017-02-16 01:33:3662

    This circuit allows a signal to be rapidly acquired to final value, but it provides a long filtering constant. Such a characteristic is useful in multi...

  • 10MHz Band-Pass Filter Composed of OPA603

    2017-02-15 23:52:0264

    The circuit makes use of the Broadband Features high-speed current feedback op amp (G=1~10, the broadband reaches 100MHz). It makes the 10MHz pass filt...

  • DZW75-48/50 (ii) 50 high-frequency rectifier filter circuit

    2017-02-15 23:41:5862

    High-frequency transformer T secondary induction of positive and negative pulse of alternating voltage, after composed of high-power high-frequency swi...

  • ACTIVE_BAND_REJECT_FILTER

    2017-02-15 23:28:0368

    A filter with a band-reject characteristic is frequently referred to as a notch filter.A typical circuit using a μA741 is the unity-gain configuration...

  • 11-90 HZ SUBWOOFER FILTER USING TL072 OP-AMP CIRCUIT SCHEMAT

    2017-02-15 18:15:4874

    11-90 HZ SUBWOOFER FILTER USING TL072 OP-AMP CIRCUIT SCHEMATIC DIAGRAM The Subwoofer filter circuit to remove for separate pre amplifier to drive the l...

  • Active and Passive filters

    2017-02-15 17:32:3661

    Active and Passive filters A Comparison: The simplest approach to building a filter is with passive components (resistors, capacitors, and inductors). ...

  • Duplex filter electric appliance circuit

    2017-02-15 17:32:3664

    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...

  • MAX264 filter circuit diagram

    2017-02-15 16:50:5761

    The system design uses a pin programmable filter MAX264 to realize low-pass or high pass filter, and the circuit is shown in the figure ( Attenuation a...

  • STATE_VARIABLE_FILTER

    2017-02-15 15:19:3463

    The filter produces three outputs: high-pass, bandpass, and low-pass. Frequency is linearly proportional to the gain of the two integrators. Two CA3080...

  • Single Power Low Voltage Bandpass Filter Circuit

    2017-02-15 14:53:2263

    As shown in the figure is a single power low voltage bandpass filter circuit. The circuit uses a single power amplifier 8FC7 to constitute a second-ord...

  • Fourth-order low-pass filter circuit

    2017-02-15 10:31:4761

    The figure shows a circuit which uses a high-level low-pass filter composed of a piece of LM348 four-operational amplifier. For example, if fc = 20kHz,...

  • band-pass filter formed by the low-pass and high pass filter

    2017-02-15 10:26:1267

    Band-pass filter is used to allow -3dB cutoff frequency with the low end and the high end. The frequency out of this range is eliminated. A simple way ...

  • SIMPLE_LOW_PASSLPACTIVE_FILTER_FOR_1kHz

    2017-02-15 07:19:2362

    This simple filter uses an RC section for a filter element, with a voltage follower for other frequencies f3 dB = 1/6.28 R1C1 Response drops 6 dB/octav...

  • Filter circuit can be used in the IF amplifier

    2017-02-15 06:54:2962

    The function of the IF amplifier is to supply the gain and the selectivity for the receiver, the selectivity part is realized by different filters. The...

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