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Application E xamp les

Measuring Inductor Turns Count

To obtain an app roximate turns count of an

inductor, do the following:

1. Connect the inductor to a current limited

source, as shown.

2. Measure t he input current on one of the

inductor leads.

3. Clamp the current probe around the

inductor and note the current value.

The num ber of turns is equal to the ratio of coil

current to input current.

NOTE. The accuracy of this method is limited

by the current measurem ent accuracy. S ee the

next page for a more accurate procedure.

22 TCP0150 Current Probe Instruction Manual