Question about the Inductance

Mesbah Yeaqub

Prodigy 90 points

Helo

How is the inductance shown in the GUI is related to the real inductance value of the PCB coil ?

i have measured the PCB coil inductance to be 9 uH wheres the value shown on GUI is about 19 uH !!!!!

over 11 years ago

0 Daniel Lanzone over 11 years ago

TI__Prodigy 715 points

Hello Mesbah,

How are you measuring the inductance?

We measured the coil with a network analyzer and got 19uH.

Best Regards,

Dan Lanzone

0 Mesbah Yeaqub over 11 years ago in reply to Daniel Lanzone

Prodigy 90 points

Helo Dan

I measured it with a LC meter

0 Daniel Lanzone over 11 years ago in reply to Mesbah Yeaqub

TI__Prodigy 715 points

Hello Mesbah,

Our design target for the coil was 19uH; I have measured this to be ~17uH@100kHz on an LC meter. This will generally increase slightly at the operating frequency of a few MHz.

It is possible that there is a manufacturing defect in your coil that caused a short, thus the 9uH.

Best Regards,

Dan Lanzone

0 Evgeny Fomin over 11 years ago in reply to Daniel Lanzone

TI__Genius 9300 points

The GUI measures expected 19uHr - this indicates proper operation of the coil.

I would suggest to double-check the measurement.

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Question about the Inductance