Application Notes & News
Application of the Micsig SigOFiT optically isolated fiber optic probe
Learn how optical-fiber isolated probes enable accurate Vgs and Vds measurement in SiC MOSFET dynamic testing, minimizing parasitics and EMI for precise switching loss analysis.
Use of optically isolated measuring probes for testing high-power DC power supplies
Learn how high common-mode rejection optical probes, high-resolution oscilloscopes, and Rogowski current probes enable precise high-speed waveform measurements in power supply testing and semiconductor development.
A common misconception regarding optically isolated fiber optic probes
Understanding the difference between differential voltage and common-mode voltage and why optically isolated probes are superior to conventional differential probes in high dv/dt SiC and GaN power circuits.
Application example of an optically isolated probe in the double pulse measurement of motor controls for electric vehicles.
Learn how optically isolated probes with high common-mode rejection ratio (CMRR) improve the dual-pulse testing of SiC and GaN motor controllers in electric vehicles and enable precise Vgs and current measurements.
Fiberglass-insulated probe during the double pulse test
Optical insulation probes are essential for precise double-pulse tests on WBG semiconductors due to their high durability.
Misunderstandings regarding signal frequency in power component bridge circuits: switching frequency versus signal bandwidth
Understand the difference between switching frequency and signal frequency in power semiconductor bridge circuits. Learn why high-bandwidth probes are essential for accurate Vgs and Vge measurements in SiC and GaN applications.
What are common-mode and differential-mode signals?
Learn the difference between common-mode and differential-mode signals and discover why high common-mode rejection ratio (CMRR) is essential for precise testing of GaN and SiC power electronics in optically isolated probes.