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FIRST ORDER ACTIVE NOTCH FILTER
Download Active-Notch-filter.epb

Aim

To simulate a first order active notch filter.

Components Required

Opamp- 741 (1), Resistor - RC05 (4), Capacitor – CC0805 (3), DC voltage source - VDC (2), AC Voltage source – VGEN (1), Ground - SPL0 (4)

Circuit Diagram

Procedure

1. Draw the circuit diagram after loading components from library. Assign net names for connections wherever necessary. Preprocess the circuit by invoking Simulation → Preprocess. Place waveform markers on input and output nodes. For placing waveform markers, select Tools → Instruments → set wave form Contents → Voltage waveform → Click on the required net and place the waveform marker. Run Small Signal AC Analysis after setting up required parameters.

2. To proceed with the simulation, the steps are as follows Select Tools → Components → Component properties→ Change simulation parameters→ Click on the required component and change its values.

The values to be provided to the components are

OPAMP : 741 (Since it is a Subcircuit, no parameter is to be assigned)

Resistors : 15k (2), 10k, 8.2k

Capacitor : 10nF (2), 20nF

VDC/1 : 15V

VDC/2 : -15V

3. For performing the Small Signal AC Analysis, select Simulation → Analysis. Select Small Signal AC Analysis from the tree view.

Enter the values as

Variation : Decade
Total Points : 5
Start Frequency : 10Hz
End Frequency : 100kHz
Results : Select Waveform for displaying the output.

4. Click on Accept. Expand the Small Signal AC Analysis and select Waveform viewer, Select As Marked. Select real part from the Complex values. Click on Accept. Select Small Signal AC Analysis. Run Analysis by clicking on Run button.

Result

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