| 31. | As mentioned above, \ scriptstyle Z _ B can be set to any desired impedance without affecting the input impedance.
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| 32. | The input impedance of the receiving equipment is supposed to be " very high " anyway, isn't it?
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| 33. | The head has an output impedance of 16ohms-but the speakers I am looking at have an 8ohm input impedance.
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| 34. | Valve oscilloscopes share this very high input impedance and thus can be used to measure voltages even in very high impedance circuits.
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| 35. | At differential mode, they behave as common-emitter stages with grounded emitters; so, the input impedances are low.
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| 36. | As a result, the effective voltage across, and the current through, the impedance decrease; the input impedance increases.
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| 37. | This reduces their gain, but improves their linearity, input impedance, output impedance, and phase shift in the feedback path.
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| 38. | If the input impedance of the voltmeter is sufficiently large, the SVM probe should not perturb the operation of the operational sample.
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| 39. | Adding the lower FET results in a high input impedance, allowing the cascode stage to be driven by a high impedance source.
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| 40. | The series-parallel transformation allows the input impedance to be dropped down to lower impedances while sustaining a voltage across the circuit.
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