| 31. | Amplifiers are not ideal; they also have some output impedance that limits the amount of power they can provide.
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| 32. | The output impedance is defined as this modeled and / or real impedance in series with an ideal voltage source.
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| 33. | The rated output impedance is the impedance into which the amplifier can deliver its maximum amount of power without failing.
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| 34. | More importantly, low output impedance can reduce distortion by improving the control that the source has over the transducer.
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| 35. | The output impedance of the MOSFET Wilson current mirror can be calculated in the same way as for the bipolar version.
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| 36. | The Circlotron has about one-half the output impedance of the Futterman-style ( totem-pole ) circuits.
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| 37. | The head has an output impedance of 16ohms-but the speakers I am looking at have an 8ohm input impedance.
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| 38. | The low frequency roll-off can be explained by many tube amplifiers having high output impedance compared to transistor designs.
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| 39. | Sources are modeled as ideal sources ( ideal meaning sources that always keep the desired value ) combined with their output impedance.
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| 40. | This reduces their gain, but improves their linearity, input impedance, output impedance, and phase shift in the feedback path.
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