File:Negative resistance AC equivalent circuit.svg
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Summary
| Description |
English: AC equivalent circuit of a simple negative differential resistance connected to an external circuit, showing how it can amplify an applied AC signal. The external circuit is represented as a current source ΔiS and load resistance R. The negative resistance device is biased with a DC voltage (not shown) which moves its operating point into its negative resistance region, in which it has differential resistance Δv/Δi = -r. Therefore it acts like a dependent current source (right) with a value of Δv/r. Because in a negative differential resistance the instantaneous AC voltage Δv and current Δi are 180° out of phase, the direction of the current is out of the positive voltage terminal. Therefore the negative resistance current Δi adds to the source current ΔiS through the resistor, increasing the output power. |
| Date | |
| Source | Own work |
| Author | Chetvorno |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:50, 7 July 2013 | | 1,043 × 594 (18 KB) | wikimediacommons>Chetvorno | Converted color text to B&W - less distracting |
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