Pages From Circuit Analysis Theory and Practice, 5 Edition

1010

Index

Time constants (␶ ⫽ RC). See also RC circuits current buildup transients, 463–465 notes about, 380 overview, 373 symbol, 373 universal time constant curves, 374 Time scales ac voltage generation, 489 inductive transients and, 471–473 Total conductance, 172 Total equivalent resistance, 132, 172 Transfer functions (TF) band-pass filters, 811–813, 818–819 boundary functions, 792–793 overview, 791–792 phase shifts, 791, 792, 793, 794, 795, 796, 797 voltage gain, 791–792, 793, 794, 795, 796–797 Transfer functions, RC and RL, 791–800, 822 Bode plot sketching of, 792–800, 801–802, 808–810 examples, 796–798, 803–805, 809–810 high-pass filter circuits, 807–810 low-pass filter circuits, 801–806, 807 overview, 791, 792 practice problems, 798–799, 806, 810 problems, 822 writing, 799–800 Transformation ratio, 835. See also Turns ratio Transformers. See also Coupled circuits; Iron-core transformers air-core, 831, 832, 855–856 construction, 831–832 ferrite-core, 832 frequency response curve of audio, 855 overview, 828–834 planar, 832–833 power transformer ratings, 842, 869 symbols, 833 turns ratio, 835, 840, 844, 845, 851 two broad categories, 831 Transformer applications autotransformers, 846–847 impedance matching, 844–845 isolation applications, 844 power supply transformers, 842, 843 problems, 869 transformers in power systems, 842–844 transformers with multiple secondaries, 845–846 Transformers and coupled circuits coupled impedance, 862–863, 872 Faraday’s law, 833–834 in-process learning checks, 839–840, 847–848, 855, 873 introduction, 829–834 iron-core transformers: ideal model, 834–839, 867–868 loosely coupled circuits, 833, 855–860, 870–871 magnetically coupled circuits with sinusoidal ac excitation, 860–862, 871 overview, 828–829 power transformer ratings, 842, 869 practical iron-core transformers, 848–852, 869–870 primary winding, 830, 831 problems, 867–872 reflected impedance, 840–842, 868

secondary winding, 830, 831 transformer applications, 842–847, 869 transformer tests, 852–854, 870 voltage and frequency effects, 854–855 winding directions, 833 Transformer tests open-circuit test, 852, 853–854 problems, 870 short-circuit, 852–853 Transients. See also Inductive transients capacitive, 364 in capacitive circuits, 365, 366 current buildup, 461–465, 479–480 desirable, 366 inductance and, 458, 459 in inductive circuits, 365, 366, 457 overview, 346, 458 switches and, 366 undesirable, 366 Transient analysis, meaning of time in, 369 Transient analysis using computers examples, 395 Multisim, 390–393 overview, 390 practice problems, 392, 393, 394 problems, 402 PSpice, 390, 393–396 Transient duration (5␶), 373–374 Transistor, 213, 696 bias, 213 Turns ratio, 840, 844, 845, 851 overview, 835 Two-wattmeter method, 898 Ultracapacitors, 349. See also Supercapacitors Unbalanced bridge, 271 Unbalanced loads delta loads, 902–904 overview, 901 problems, 914–915 three-phase system, 901–904, 914–915 wye loads, 901–902 Unbalanced systems, 875 Unit conversions, 7 magnetic, 411 overview, 8–10 problems, 19–20 Unit systems. See also SI system of units English (US Customary), 6, 7 metric, 6, 7–8 Universal-bias circuit, 216 Universal time constant curves, 374 Unloaded output, 218 VA. See Volt-Amperes Valence electron, 30 VAR. See Volt-amps reactive Variable capacitors, 349 Variable inductors, 446 Variable resistors, 217. See also Potentiometers overview, 71–73

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