Posted Fri, 30 Sep 2022 19:49:29 GMT by User, Forum

Hi,

I am using TCP305A to measure the current through a very small value inductor like tens of nH. Want to know the effect of the probe inductance on the effective inductance of the inductor under test.

Posted Fri, 30 Sep 2022 19:54:31 GMT by Expert, Tektronix Applications

Hello,

The TCP305 has Insertion Impedance of 0.02 Ohm @ 1 MHz, 0.1 Ohm @ 10 MHz, and 0.35 Ohm @ 50 MHz.

You can find this spec on page 50 of the user manual linked below.

https://download.tek.com/manual/TCPA300-400-Amplifiers-and-TCP300A-400-Current-Probe-User-Manual-077118302.pdf

You must be signed in to post in this forum.