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This page summarizes and displays all the study materials, references, EMC standard analysis, digital isolator test methods, chip EMC test methods, and other professional resource articles and explanatory documents released by our company.

Difference between HT9464 and HT9464M

Both the HT9464 and HT9464M meet the requirements for certification testing of magnetic and capacitive couplers and digital isolators with basic or enhanced isolation, in accordance with standards such as VDE V 0884-11, UL 1577, etc....

Conversion formula for electric and magnetic fields

The electric and magnetic field conversion formula using the free-space wave impedance of 377Ω applies only to far-field plane waves (EMC radiated nuisance, antenna far-field), and is not available for the near-field (coils, IF magnetic fields, near-field probes, near areas of shielded chambers). 377Ω ...

What standards need to be looked at for optocouplers or digital isolators for safe electrical isolation?

When optocouplers are used to protect a system from electrical damage, they must comply with, for example, DIN EN 60747-5-2 as well as DIN EN 60747-5-5, DIN EN IEC 60747-17 ...

SAE Automotive Electronics EMC Test Standards List-2026 Update

This paper focuses on the SAE automotive electronics EMC test standards that will be in effect in 2026, compiles and integrates the list of core standards, clarifies the standard number, standard name, effective date and corresponding ISO standards, and briefly summarizes each standard...

CS101 25Hz - 150kHz Power Line Conductivity Sensitivity Test Introduction

CS101 is a test item of military EMC standard, which is mainly used to verify the immunity tolerance of EUT to carry coupled RF voltage signals to the input power line. This article provides CS101 limit lines, calibration methods, EUT...

Differences between isolated and non-isolated power supplies

Power supply hardware circuits can be designed as isolated or non-isolated, the difference between isolated and non-isolated power supplies lies in the presence or absence of electrical isolation in the circuit, power supplies with isolated circuit design can isolate the high-voltage inputs and outputs to avoid electrocution and other hazardous events;...