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| | Signal Integrity, Impedance and Electrical Models > Circuit Theory and SPICE (Site not responding. Last check: 2007-11-01) |
 | | The important rule in circuit theory is that when two or more elements are in series, that is, connected end-to-end, the impedance of the combination, from one end terminal to the other end terminal, is the sum of the impedances of each element. |
 | | The set-up of this circuit in SPICE and the resulting time-domain waveform, showing the ringing that might be found in the actual circuit, is shown in Figure 3-9. |
 | | If the constant-current source is connected to a circuit that has some impedance associated with it, Z(ω), then to keep the amplitude of the current constant, the voltage it applies will have to adjust. |
| www.phptr.com /articles/article.asp?p=102225&seqNum=9 (1423 words) |
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