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Q&A How to plot the I-V curve of a tunnel diode?

How to test a Tunnel diode in 25 words or less. With DC bias = ~490mV with fine tuning and a small signal swing of 60mV you can generate a IV negative slope of -16 Ohms.

posted 4y ago by TonyStewart‭ · edited 4y ago by TonyStewart‭

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#2: Post edited by

TonyStewart‭ · 2020-11-20T21:34:39Z (over 4 years ago)

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[How to test a Tunnel diode in 25 words or less.](http://www.falstad.com/circuit/circuitjs.html?ctz=CQAgDCDsB0CMBMBWApgWgSeNJfvAHACyLwDMsppAnPiIaSLBIfAFABKdYE8hz3mMLQgM+3cRDDQw8GuGiEqsKitVrVhcPMSsATlx58DmHFqJwAbKwDmxyhbslwrAPLHcIUk4+TWsSIjupmKe8L4A7nSk8CYxIT6skfQx0fwiYc4ADlExHsmhELCMznwMiISaSA4WpqQWwnQA+haEjWCN8BSwiI0oqFSNsNISIyPwaJCkgx2NrVMAKgCuAHbLyAA2ADoAzgAiAJYA9gAmyDsAGgCamwCOAGoAkol2GSH2jKzZ+XnRmEZFmjArAAHph8AxSPgIIhYLRIaJGNUwDsALZ3TKZHYAeh2qFI0EgqIAghjbrjYBYdi4ABYo7afdxGb7-OjOQ6eEAtLQIcoOKT0SCwQgWKjURAWGqKMCBKTiIqFEBLVYbHYHE7IVjsopc5iIcgMWXceXDQg4EUtCwUrz4BAxHjFUia1lcyCMJDC+Ryz1G4rG8QWSHC6L1chUMAWMCutWnJ0QHVg0WSaAkfw0QUBJQSmHesBFIp2jkAcWQyx2AAplocdutDgBDY4ASlYkOKCqYEHYyG2+22ABda8sAMYaluST15kAAWVrwJ2d0O6371hHDQLUgcuwAwlSAGY77bIXusIA)
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~~With DC bias = 450mV with fine tuning and a small signal swing of 60mV you can generate a IV negative slope of -16 Ohms.~~
![Image of Tunnel diode test](https://electrical.codidact.com/uploads/bmCbBqRbHQtTZV4B9u2tE9XK)

[How to test a Tunnel diode in 25 words or less.](http://www.falstad.com/circuit/circuitjs.html?ctz=CQAgDCDsB0CMBMBWApgWgSeNJfvAHACyLwDMsppAnPiIaSLBIfAFABKdYE8hz3mMLQgM+3cRDDQw8GuGiEqsKitVrVhcPMSsATlx58DmHFqJwAbKwDmxyhbslwrAPLHcIUk4+TWsSIjupmKe8L4A7nSk8CYxIT6skfQx0fwiYc4ADlExHsmhELCMznwMiISaSA4WpqQWwnQA+haEjWCN8BSwiI0oqFSNsNISIyPwaJCkgx2NrVMAKgCuAHbLyAA2ADoAzgAiAJYA9gAmyDsAGgCamwCOAGoAkol2GSH2jKzZ+XnRmEZFmjArAAHph8AxSPgIIhYLRIaJGNUwDsALZ3TKZHYAeh2qFI0EgqIAghjbrjYBYdi4ABYo7afdxGb7-OjOQ6eEAtLQIcoOKT0SCwQgWKjURAWGqKMCBKTiIqFEBLVYbHYHE7IVjsopc5iIcgMWXceXDQg4EUtCwUrz4BAxHjFUia1lcyCMJDC+Ryz1G4rG8QWSHC6L1chUMAWMCutWnJ0QHVg0WSaAkfw0QUBJQSmHesBFIp2jkAcWQyx2AAplocdutDgBDY4ASlYkOKCqYEHYyG2+22ABda8sAMYaluST15kAAWVrwJ2d0O6371hHDQLUgcuwAwlSAGY77bIXusIA)
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With DC bias = ~490mV with fine tuning and a small signal swing of 60mV you can generate a IV negative slope of -16 Ohms.
![Image of Tunnel diode test](https://electrical.codidact.com/uploads/bmCbBqRbHQtTZV4B9u2tE9XK)

#1: Initial revision by

TonyStewart‭ · 2020-11-20T21:14:34Z (over 4 years ago)

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[How to test a Tunnel diode in 25 words or less.](http://www.falstad.com/circuit/circuitjs.html?ctz=CQAgDCDsB0CMBMBWApgWgSeNJfvAHACyLwDMsppAnPiIaSLBIfAFABKdYE8hz3mMLQgM+3cRDDQw8GuGiEqsKitVrVhcPMSsATlx58DmHFqJwAbKwDmxyhbslwrAPLHcIUk4+TWsSIjupmKe8L4A7nSk8CYxIT6skfQx0fwiYc4ADlExHsmhELCMznwMiISaSA4WpqQWwnQA+haEjWCN8BSwiI0oqFSNsNISIyPwaJCkgx2NrVMAKgCuAHbLyAA2ADoAzgAiAJYA9gAmyDsAGgCamwCOAGoAkol2GSH2jKzZ+XnRmEZFmjArAAHph8AxSPgIIhYLRIaJGNUwDsALZ3TKZHYAeh2qFI0EgqIAghjbrjYBYdi4ABYo7afdxGb7-OjOQ6eEAtLQIcoOKT0SCwQgWKjURAWGqKMCBKTiIqFEBLVYbHYHE7IVjsopc5iIcgMWXceXDQg4EUtCwUrz4BAxHjFUia1lcyCMJDC+Ryz1G4rG8QWSHC6L1chUMAWMCutWnJ0QHVg0WSaAkfw0QUBJQSmHesBFIp2jkAcWQyx2AAplocdutDgBDY4ASlYkOKCqYEHYyG2+22ABda8sAMYaluST15kAAWVrwJ2d0O6371hHDQLUgcuwAwlSAGY77bIXusIA)
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With DC bias = 450mV with fine tuning and a small signal swing of 60mV you can generate a IV negative slope of -16 Ohms.

![Image of Tunnel diode test](https://electrical.codidact.com/uploads/bmCbBqRbHQtTZV4B9u2tE9XK)

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