Author Topic: Power calculation  (Read 1159 times)

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sk614

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Power calculation
« on: June 03, 2016, 04:23:35 pm »
I not sure if i am asking the right question here so bare with me.  I want to calculate the power requirement for the following.

A sensor operating at 3v3 @50mA doing 100sample/sec. What would be the power usage per second or sample?

blueskull

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Re: Power calculation
« Reply #1 on: June 03, 2016, 04:39:41 pm »
165mJ/sec and 1.65mJ/sample.

suicidaleggroll

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Re: Power calculation
« Reply #2 on: June 03, 2016, 04:45:32 pm »
Does the sensor always draw 50mA, or only while it's sampling?  How long does the sensor take to make a sample?  What is it doing in between samples, and what is its power consumption then?  What about wakeup time?

sk614

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Re: Power calculation
« Reply #3 on: June 03, 2016, 06:53:43 pm »
There is no downtime, so a continuous 50mA. So would power just be 3.3V*50mA?

suicidaleggroll

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Re: Power calculation
« Reply #4 on: June 03, 2016, 07:04:29 pm »
There is no downtime, so a continuous 50mA. So would power just be 3.3V*50mA?

Yes

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