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How do you measure quiescent current? (For instance, a Battery connected device)

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    \$\begingroup\$ Could you provide a circuit? We have a built in circuit plugin tool where you can make a small circuit so that we can see what you're talking about. Where is the battery connected? \$\endgroup\$
    – user103380
    Nov 20, 2018 at 0:30
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    \$\begingroup\$ Roo - Can you be more specific about the problem? For example, is your problem about physically making the connection in series with the power source / battery? Or is it a measurement problem, and your existing equipment can't measure those low currents? Or something else? \$\endgroup\$
    – SamGibson
    Nov 20, 2018 at 0:32

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You measure it like you would active current use. Nothing changes. Quiescent current is the amount of current a circuit, that is doing nothing, takes. You would connect it to a ammeter just the same. For very low quiescent currents, you may need a more precise or quality meter. Some devices or circuits have IQs in the micro and nano amp ranges, which a cheaper meter would not be good enough to register properly.

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  • \$\begingroup\$ Maybe I'll invest in a uCurrent \$\endgroup\$
    – Roo
    Nov 20, 2018 at 9:37

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