Why Does Ripple Increase in DC Electronic Load Testing? DC electronic loads can simulate real-world load conditions. Generally, to ensure power quality, electronic loads are purchased for testing. Electronic loads offer a variety of functions, including adjustable load sizes, as well as short-circuit, overvoltage, and dynamic protection features. It must be said that all power manufacturers use them, and they are a must-have in the industry.
The DC electronic load is composed of a resistor, an inductor, a capacitor, a transistor, and an integrated circuit. It can control the power or conductivity deviation coefficient of the MOSFET to dissipate energy. Additionally, the simulated load is of the resistor and sensitive capacitor type, as well as the current rise time of the load capacitor, which is necessary for debugging the entire power switch test.
Why does the wavelength increase during DC electronic load testing?
The wavelength of the structure overlaps with the wavelengths generated by the ESR of capacitors and the charging/discharging of capacitors themselves, which is directly related to the type and size of the current and load. Generally, the larger the load, the larger the texture waveform. Without a load wave, the ripple would be extremely small. For load testing, an electronic power supply corresponding to the load is used. The ripple is obviously much larger than at zero load. When dynamic load control is added, it becomes even greater.
High-Ripple Processing Method for DC Electronic Load Testing
This may be due to an issue with the electronic starting program itself, which can be pre-checked through an self-inspection procedure.
2. The upward slope may be too steep, which can be corrected. If the above two scenarios are ruled out, contact the load manufacturer for inspection, calibration, and replacement of defective parts.
