Magnetic Saturation in Pulsed Current Transformers
In current measurement, pulse current transformers remain an excellent solution for AC and pulsed currents, with fast response and high accuracy - so questions about them deserve attention. Here we discuss a key precaution: avoid core saturation, which can burn out the transformer.
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Probe Specifications Explained
Probes have many specifications, all tied to getting correct data from your application - today we look at what they are.
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PD-200X Cost-Effective Double-Pulse Test Platform and Its Three Key Features
The Jectronic PD-200X double-pulse dynamic test platform: cost-effective, stable and universal, with modular intelligent design, excellent instrument and probe compatibility, and high-redundancy safety for high-voltage, high-current device testing. It is the most cost-effective double-pulse system available - ideal for universities, research institutes and semiconductor start-ups.
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T&M Coaxial Shunts: User Guide
A user's guide to T&M coaxial shunts.
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Overlooked Probe Usage Mistakes
Anyone who uses an oscilloscope regularly depends on probes; some enjoy excellent results, others are disappointed.
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Fluxgate vs. Hall-Effect Current Sensors
Hall current sensors detect current with a Hall element sensing the external field. The chip is susceptible to ambient disturbance with appreciable offset and temperature drift, and the core must be cut with an air gap - inherent limits on accuracy and interference immunity. Fluxgate sensing is based on classical control theory instead of a sensing chip: insensitive to the environment, virtually free of offset and temperature drift, with no air-gap cut, low reluctance and stable flux - delivering high accuracy, high sensitivity and fast response.
Views: 2056
IWATSU SS-660P: A High-Frequency Rogowski Probe for Direct Switching-Parameter Measurement on TO247-4
The distinctive feature of the TO-247-4 package is the fourth lead to the gate driver: it removes the influence of the emitter lead's high-frequency stray inductance in the gate loop, so the IGBT responds faster to the drive. The faster response of SiC IGBTs and MOSFETs cuts switching energy loss and allows faster turn-on and turn-off.
Views: 1088IWATSU SS-660P: A High-Frequency Rogowski Probe for Direct Switching-Parameter Measurement on TO247-4
The distinctive feature of the TO-247-4 package is the fourth lead to the gate driver: it removes the influence of the emitter lead's high-frequency stray inductance in the gate loop, so the IGBT responds faster to the drive. The faster response of SiC IGBTs and MOSFETs cuts switching energy loss and allows faster turn-on and turn-off.
Views: 1088
PPM-Level Current Accuracy with Fluxgate Sensors
A fluxgate sensor measures weak magnetic fields through the nonlinear B-H relationship of a high-permeability core driven into saturation by an alternating field. The core acts as a 'gate' through which the flux is modulated, inducing a voltage. Measuring the field produced by a current gives an indirect current measurement.
Views: 2112PPM-Level Current Accuracy with Fluxgate Sensors
A fluxgate sensor measures weak magnetic fields through the nonlinear B-H relationship of a high-permeability core driven into saturation by an alternating field. The core acts as a 'gate' through which the flux is modulated, inducing a voltage. Measuring the field produced by a current gives an indirect current measurement.
Views: 2112