| 1. | Gives the small source impedance ( output impedance ) of the power amplifier.
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| 2. | For a medium source impedance, a common emitter or common source topology may be used.
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| 3. | Consider a real source impedance of R _ 1 and real load impedance of R _ 2.
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| 4. | If the source impedance is low, then a common base or common gate circuit topology may be appropriate.
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| 5. | If a reactance X _ 1 is in parallel with the source impedance, the combined impedance can be written as:
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| 6. | The theorem can be extended to alternating current circuits that include impedance is equal to the complex conjugate of the source impedance.
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| 7. | Using a dedicated hysteresis pin is also convenient if the source impedance is high since the inputs are isolated from the hysteresis network.
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| 8. | Alternatively, a voltage buffer may be used before the amplifier input, reducing the effective source impedance seen by the input terminals.
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| 9. | In general, the source impedance is matched to the input impedance because that will maximize the power transfer from the source to the device.
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| 10. | :: : If you are going to simulate this circuit on spice, I would use a representative source impedance to simulate the aerial.
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