# ECE 201 Final Exam Review

rename
deutschklasse's
version from
2015-12-13 20:45

## Section

Question | Answer |
---|---|

Neper's Frequency | R/(2L) |

Resonant Frequency | w = 1/sqrt(LC) |

Condition for Overdamped | Neper > Resonant |

Condition for Critically Damped | Neper = Resonant |

Condition for Underdamped | Neper < Resonant |

Work of a Capacitor | W = 1/2(C)V^2 |

Basic Cap Equation | i = C dV/dt |

Work of an Inductor | W = 1/2(L)i^2 |

Basic Inductor Equation | V = L di/dt |

Power Eq | P=IV |

Overdamped EQs | f(t) = A1e^(s1t) + A2e^(s2t) ; f(0) = A1 + A2 ; df/dt = A1s1 + A2s2 ; s1 = -a + sqrt(a^2 - w0^2) ; s1 = -a - sqrt(a^2 - w0^2) |

Critically Damped EQs | f(t) = A1te^(-at) + A2e^(-at) ; f(0) = A2 ; df/dt = A1-aA2 |

Underdamped EQs | f(t) = C1e^(-at)cos(wdt + theta) ; f(0) = C1cos(theta) ; df/dt = -aC1cos(theta) - C1sin(theta) ; wd = sqrt(w0^2 - a ^2) |

Time Constant (RC) | tau = RC |

Time Constant (LR) | tau = L/R |

Y Resistors | = (Sum of Adjacent Resistors)/(Sum of delta Resistors) |

Delta Resistors | = (Sum of Y resistor Pairs)/(Opposite Y resistor) |

Capacitance Eq | C = (EA)/d |

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