| 1. | Overall, the effect is a negative resistance at the emitter terminal.
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| 2. | If the impedance yields a negative resistance term, oscillation is possible.
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| 3. | Therefore the negative resistance only occurs over a limited range of voltages.
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| 4. | One notices that a negative resistance would cause the oscillations to increase.
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| 5. | It is a current controlled negative resistance device.
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| 6. | Examples include quantum tunneling, negative resistance, phonon-assisted hopping and polarons.
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| 7. | The forming of negative resistance will be examined in detail in operation section below.
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| 8. | This negative resistance was mostly a feature of older tubes, of 1940s or earlier vintage.
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| 9. | As in the dynatron oscillator the control grid can be used to adjust the negative resistance.
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| 10. | The discontinuity caused by negative resistance devices ( such as tunnel diodes ) can also be seen.
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