Question

Circuit 3-RL High Pass Filter Circuit 

Choose R=1.5 k Ω, and L=27 mH . Input from AWG is a Sine Wave, 4 V, 500 Hz, Base 2 ms/div, Click on Network Analyzer. Choose start frequency 100 Hz and Stop frequency 100 kHz and steps 100 .

Bode scale for Magnitude: Top 0 dB, Range 10 dB

Bode scale for Phase: Top 90°, Range 75%. (You can always play with the scale. Make sure the Phase and Magnitudo are seen well on the screen)

Measure the cut off frequency @~3dB with your cursor.

Circuit 4 - RL Low Pass Filter Circuit

Choose R=1.5 k Ω, and L=27 mH. Input from AWG is a Sine Wave, 4 V, 500 Hz, Base 2 ms/div. Click on Network Analyzer. Choose start frequency 100 Hz and Stop frequency 100 kHz and stops 100 .

Bode scale for Magnitude: Top 0 dB, Range 10 dB

Bode scale for Phase: Top 15°, Rango 75°. (You can always play with the scale. Make sure the Phase and Magnitude aro seen well on the sereen)

Measure the cut off frequency @~3 dB with your cursor.

Answer 1

THEORY

  

L=27 mH ,R=1.5 Kohm

So cutoff frequency

  

=8.846 KHz

High pass

Bode plot\

AC ANALYSIS

LOW PASS

AC ANALYSIS

RESULTS

Series R L	Measured 3_dB freq in Khz	Measured phase angle @ 3dB	Calculated 3 dB	Measured pahse angle @3db
Low Pass	8.82	-44.93	8.84	-45
High Pass	8.812	45	8.84	45