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session_6 - EE2231 Lab Session 6 Name 1 Assignment Complete...

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EE2231 Lab Session 6 Name 1 Assignment Complete Experiment 6 in the lab manual. Submit your report one week after the lab session. The lab assistant must initial each procedure as it is completed. This sheet must be submitted at the end of the lab to receive credit for any practical work. Power Supply Filtering One way to consider the reduction of ripple in a power supply is to think of it as adding low pass filtering to the output. After all, ripple is just an AC signal. Figure 1 in the experiment uses a Butterworth low-pass filter. Here is a spice model of a filter with a 10 Ω load. Butterworth PI Filter VS 1 0 AC 1 PULSE(0 10 .5 0 0 1) C2 1 0 1 L1 1 2 1 C1 2 0 1 R1 2 0 10 .CONTROL tran .01 30 plot v(1) v(2) ac dec 100 1m 100 plot db(v(2)/v(1)) .ENDC There is a natural frequency at which the capacitors and inductor will exchange energy back and forth. This is easily illustrated in figure 1 where the circuit input is pulsed and left to oscillate. Note that without a resistive load this circuit will oscillate forever (assuming
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This note was uploaded on 01/25/2012 for the course EE 2231 taught by Professor Staff during the Spring '08 term at LSU.

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session_6 - EE2231 Lab Session 6 Name 1 Assignment Complete...

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