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The Internets

The Internets. DSL/phone filters. Talkin ’ on the Telephone…. Voice band : 0.3 - 3.4 kHz DSL band : 30 – 1104 kHz. Image credit: http://www.accesscomms.com.au/Reference/ADSL_wiring.htm. DSL Phone filter. Commercial filter. What’s in the Box. L1 = 6.8 mH L2 = 10 mH

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The Internets

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  1. The Internets DSL/phone filters

  2. Talkin’ on the Telephone… Voice band: 0.3 - 3.4 kHz DSL band: 30 – 1104 kHz Image credit: http://www.accesscomms.com.au/Reference/ADSL_wiring.htm

  3. DSL Phone filter Commercial filter What’s in the Box L1 = 6.8 mH L2 = 10 mH C1 = 22 nF C2 = 15 pF C3 = 15 nF.

  4. Introducing inductors In the lab On paper/In The Ether

  5. Nodal Is powerful “Someone say Nadal is powerful? Heck, ya, he is!” “Settle down, Rafa.”

  6. Loading the matrix • Where, for convenience:

  7. Frequency spectrum ~ -80 dB/decrolloff Steep slope!

  8. Another DESIGN using different L’s and C’s ~ -40 dB/decrolloff L1 = 15 mH L2 = 60 mH C1 = 10 nF C2 = 5.6 nFC3 = 2.2 nF

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