4 order filter with a single IC project PCB

Posted on Feb 7, 2014

Circuit Filters with high orders are designed usually with 2 or more cascaded sections. This order 4 filter need only one OA IC, so we can achieve lower distorsions, lower intermodulation Resistors values represent the load on the OA output, the maximum TL081 load is 2k ©. R1-R4 build a 2. 5k © impedance and so the external load cannot be low

4 order filter with a single IC project PCB
Click here to download the full size of the above Circuit.

er than 10k ©. The filter characteristic is a Bessel polinome. With the actual components value, at -3dB the frequency is 1kHz. You can obtain different frequencies by changing the components value.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Timer circuit
    Proximity detector
    What should I take in account when using a more powerful triac
    Shift register on a schematic
    simple intercom circuit with
    Loop Control Automatic Reversing Circuit
    Television Camera Experiments
    1995 camaro: just swapped the engine/ trans with cradle wheel well
    TV cascades
    A small DC motor control circuit a
    Radio harmonic detection circuit
    An estimate of the load current monitor circuit rod