罗氏线圈CWT Ultra-mini 英国PEM

　　The cWT Ultra-mini has an extremely thin, clip-aroundRogowski coil of typically 1.6mm cross-section. Such a thincoil enables currents to be measured in the most difficult toreach parts of a power electronic converter with negligibledisruption to the circuit under test.

　　Applications

　　● Switching current waveforms in power electroniccircuits, for example

　　   ● in MOSFET or lGBT devices as smallas TO-220 or TO-47

　　   ● in bond wires in power devices

　　   ● to measure power losses in semiconductors

          ● monitoring currents in small inductors,capacitors, snubber circuits , etc

　　● Measuring small AC currents in the presence oflarge DC currents (e.g. monitoring capacitorripple)

　　● Power converter development and diagnostics

       ● Measuring high frequency sinusoidal, pulsed ortransient currents

　　● Measuring high order harmonics

　　Key features

　　● Expanded operating temperature range-40℃ to +125℃

　　● Extended (-3dB) bandwidth froma few Hz to 30MHz

　　● Current ratings from 30Apk to 6000Apk

　　● lmproved peak di/dt capabilities up to 70kA/us

       ● 1.7mm (max) cross section, flexible,clip-around coil

　　● ±6V into 1MΩ, and 50Ω drive capability

       ● Loads the circuit under test by only a few pH

       ● Positional accuracy typically +2%

　　This latest release of the CWTUltra-mini has improved:

　　high frequency (-3dB)bandwidth of 30MHzoperating temperaturerange of -40℃ to +125℃