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Using 2304A to detect over current condition

2302, 2303, 2303-PJ, 2304, 2306, 2306-PJ, 2306-VS, 2308
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KellyGeier
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Joined: May 11th, 2011, 12:07 pm
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Using 2304A to detect over current condition

Post by KellyGeier » May 11th, 2011, 12:33 pm

Has anyone used the 2304A to perform over current detection for current pulses of relatively short duration ? e.g. 5- 10 milliseconds ? I would want to put the 2304 A on the 5 A scale, set the current limit to 0.5 A or 1.0 A, and see if the Keithley will notice if my load exceeds my current limit for even a short time period ? What is the shortest time period of over current it can detect ?

Nathan S
Keithley Applications
Keithley Applications
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Joined: February 28th, 2011, 6:17 am
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Re: Using 2304A to detect over current condition

Post by Nathan S » May 18th, 2011, 5:20 am

The current limit function on the 2300 series is much lower bandwidth than the voltage measurement capabilities. It is meant more to keep from burning up a phone/battery in case of a short. Therefore, it is possible that it would not detect a short duration pulse. We can measure pulses accurately though, so it is possible to set the current to pulse mode and set trigger level to detect the current pulse and take measurement for the appropriate time.

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