| 41. | Correct operation requires matched characteristic impedance at all four ports.
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| 42. | This notation is frequently used to represent an electrical impedance.
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| 43. | That is, a filter with unity bandwidth and impedance.
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| 44. | The acoustic impedance of piezoelectric materials facilitated their use as underwater transducers.
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| 45. | Most professional microphones are low impedance, about 200 ? or lower.
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| 46. | Video cables are 75 ohm impedance, low in capacitance.
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| 47. | A procedure called impedance matching is used to bypass this inductance effect.
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| 48. | The theorem also applies to frequency domain AC circuits consisting of impedances.
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| 49. | Lower impedance indicates greater intrathoracic fluid volume and blood flow.
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| 50. | This is valid only for non-reactive source and load impedances.
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