Position: Index > Filter Circuit >
  • State Variable Filters

    2017-02-12 08:26:3176

    With the advancement in IC technology , a number of manufacturers now offer universal filters having simultaneous low-pass, high-pass, and band-pass ou...

  • Easily_tuned_notch_filter

    2017-02-12 08:14:3266

    This circuit uses two LM107s to form a tunable notch filter. The notch frequency is set by adjustment of C1. The frequency range is determined by the v...

  • The Circuit Diagram of Q-adjustable Band-stop Filter (741)

    2017-02-12 07:54:1363

    The notch frequency and the stability of Q depend on the passive components in the T-network. Appropriate components can make up a stable filter in thi...

  • FOUR_OUTPUT_FILTER

    2017-02-12 07:19:2861

    The classic state-variable (two-integrator) filter (see Fig. A) is famous for its insensitivity to device parameter tolerances, as well as its ability ...

  • EMI Mains Filter

    2017-02-12 06:21:0262

    Modern society reliance on electrically driven appliances, creates Electro-Magnetic Interference (EMI) which manifests as electrosmog , a gathering phe...

  • Bi_quad_notch_filter

    2017-02-12 05:29:4964

    This circuit uses three sections of a quad op amp to form a notch filter. Circuit values are given for a 3-kHz notch with a Q of 5. The equations are g...

  • 60_Hz_NOTCH_FILTER

    2017-02-12 02:08:4965

    Design is based on passband gain of 3 and O of 6. Resistors can be 5%.Opamps can be 741. Notch response is obtained by subtracting output signal of ban...

  • Third-order asymmetric filter circuit diagram composed of LM

    2017-02-12 00:33:1363

    Filter circuit composed of third-order asymmetric composed of LM356 op amp is shown as above. Third-order filter has two outputs A1 and UA2. The former...

  • PIN diode with band-pass filter switch circuit

    2017-02-12 00:25:0762

    The picture shows how to choose a variety of band-pass filters in the circuit, for which only the DC signal lines are between the panel and the circuit...

  • Active Highpass Filter Circuit

    2017-02-12 00:18:0362

    As shown in the figure is an activehigh pass filter circuit. The cut-off frequency of the circuit is: fc = 100 Hz. In this circuit, the ratio of R1 and...

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

    2017-02-12 00:09:2863

    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...

  • Low_pass_active_filter_with_Norton_amplifier

    2017-02-12 00:05:1762

    This circuit uses an LM3900 Norton amplifier as a 1-kHz low-pass filter. National Semiconductor, Linear Applications Handbook, 1991, p. 227....

  • IC_Iow_pass_filter

    2017-02-11 23:06:0563

    Figure 7-14A shows the architecture and basic connections for an LTC1062 low-pass filter (similar to a 5th-order Butterworth). The cutoff frequency fc ...

  • GENERAL_FILTER

    2017-02-11 20:52:5862

    Bridging conventional bandpass filter with single capacitor C00 converts to general fiber having both sharp pass and reject behavior at adjacent freque...

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

    2017-02-11 20:36:5968

    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...

  • TUNABLE_NOTCH_FILTER_USES_AN_OPERATIONAL_AMPLIFIER

    2017-02-11 17:17:5161

    This notch filter is useful for tunable band-reject applications in the audio range. The values shown will give a tuning range of about 300-1500 Hz....

  • NOTCH_FILTER_CIRCUIT

    2017-02-11 16:30:1262

    This circuit is basically a noninverting amplifier with positive feedback. The negative feedback path is set to unity by a direct connection between th...

  • The program controlled filter circuit

    2017-02-11 14:24:4063

    The program controlled filtering is done by MAX262. MAX262 controls the filter through the single chip machine SPI general, of which the central freque...

  • SIMPLE_ALL_PASS_FILTER

    2017-02-11 11:50:5066

    A very simple all-pass implementation can be realized with an active-feedback amplifier like the AD830 or the LTC1193. R1 and C set the filter’s actu...

  • High_input_voltage_IC_filter

    2017-02-11 11:41:4062

    This circuit shows how an LTC1062 can be connected to accommodate high input voltages outside the normal input common-mode range. The dc gain of the lo...

  • VOLTAGE_CONTROLLED_FILTER

    2017-02-11 11:39:2863

    Used in elaborate sound synthesizer developed for generating wide variety of sounds. Serves as bandpass filter for which resonant frequency is Iinearly...

  • Audio Amplifier Circuit with Adjustable filter

    2017-02-11 09:07:2563

    The audio amplifier uses two integrated circuit. It can tune between the range of 500Hz to 1500Hz, which can be used to drive loudspeaker or earphones....

  • COMMUTATING_BANDPASS_FILTER

    2017-02-11 08:51:2265

    CD4051 analog multiplexer serves for commutation and switching of eight low-pass filter sections. Multiplexer is driven by CD4024 binary counter that i...

  • Level 4 Telecom Filter Circuit of uA741 Op-amp

    2017-02-11 06:13:1461

    The above circuit can use common calculation formula and then the total requirements are divided into several sections:Q1=0.541,Q2=1.306.This circuit...

  • RAZOR_SHARP_CW_FILTER

    2017-02-11 05:38:1360

    The circuit consists of four stages of active bandpass ftltering provided by two typeμA747 integrated-circuit dual op amps and includes a simple thres...

  • active filter circuit

    2017-02-11 03:52:5061

    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...

  • Single peak feature filter circuit

    2017-02-11 03:48:5661

    The single peak feature filter circuit which is composed of the single op-amp is as shown in the figure. This circuit uses a op-amp and a few component...

  • BANDPASS_FILTER_TESTER

    2017-02-11 03:02:5561

    Measures center frequency of active bandpass filter by measuring phase angle as function of frequency. 0utput of VCO excites bandpass filter under test...

  • BANDPASS_ORIGINATE_FILTER

    2017-02-11 01:18:4861

    Provides gain of over 15 dB between 1975 and 2275 Hz, to accept 2025-2225 Hz, signals of low-speed modem system using Motorola MC6860 IC,-J. M. D...

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