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Overview
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N7040A/1A/2A Rogowski AC Current Probes User Guide
Usage
• For Power converter development and diagnostics. Following are some examples:
• In MOSFET or IGBT devices as small as TO-220 or TO-247 in case of the N7042A probe.
• In MOSFET or IGBT devices as small as TO-247 or around the terminals of large power
modules in case of the N7040A / N7041A probes.
• In bond wires in power devices
• To measure power losses in semiconductors
• To monitor currents in small inductors, capacitors, snubber circuits, etc
• To measure small AC current on a conductor with high DC current or in the presence of a high DC
magnetic field. An example can be monitoring capacitor ripple.
• To measure high frequency sinusoidal, pulsed, or transient currents from power frequency to rf
applications
• To measure current in motor drives and in particular power quality measurements in VSD, UPS or
SMPS circuits
• To evaluate switching performance of power switches (double pulse tester)
• To measure high order harmonics