about kt9z1638 current

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about kt9z1638 current

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dws
Contributor III

Hi all,

1.  I confused with the current test, I don't understand this picture  as below, how to test battery output current pastedImage_1.png

could I use below circuit to test curcuit to obtain the current?

pastedImage_2.png

2.  how to caltulate the true current use Milliampere,because I don't understand the variable of cValues as follows picture

pastedImage_3.png

thank you 

Dawei 

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RadekS
NXP Employee
NXP Employee

Hi Dw,

I just check past topics and discover your question as unanswered.

Is your question still active?

The KIT9Z1J638 board does not contain current shunt, this must be connected externally.

The shunt is a low ohmic resistor which generates voltage drop when current flow through it.

You can see it in the picture below - the metal part below assembled PCB.

RD9Z1-638-12V-C-12V-Battery-Sensor-DI.jpg

I hope it helps you.

Have a great day,
Radek

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