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What is an Avalanche Diode and Why Do I Read a Negative Voltage?

Hardware: Counter/Timers (TIO)>>Devices>>PXI-6602

Problem: Why do I measure a negative voltage when using an avalanche diode? Can I fix this in software?

Solution: An Avalanche Diode is a diode that is designed to break down and conduct at a specified reverse bias voltage. This means that you will be reading a negative voltage.

Yes, you can use software to condition this and make it positive. Please see the attached example.

Related Links: Wikipedia Definition and Explanation of Avalanche Diode


Attachments:


- Invert AI Signal Example (LabVIEW 7.1).vi


Report Date: 11/13/2006
Last Updated: 11/20/2006
Document ID: 43CI2LN5

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