SK120X : Калибровка напряжения, замер КПД и пульсаций. Доработка.

About this video

• Video Title: SK120X : Калибровка напряжения, замер КПД и пульсаций. Доработка.
• Channel: SkDen_Tech
• Speakers: None explicitly named, but likely the creator of the channel.
• Duration: 00:15:37

Overview

This video details the calibration, efficiency (КПД), and ripple (пульсаций) measurements of the SK120X boost-buck converter. The creator also demonstrates a simple modification to improve ripple performance and discusses its practical application as a charging station.

Key takeaways

• Calibration: The SK120X converter's voltage can be calibrated to improve accuracy, particularly within the typical working voltage range of 5V to 20V.
• Efficiency (КПД): The measured efficiency is around 74-75%, which is lower than the manufacturer's claims, but considered acceptable for its versatility.
• Ripple (Пульсации): Initial ripple measurements were up to 100 mV under load. A simple LC filter modification was attempted but worsened performance. A subsequent modification using only a 1000 microfarad capacitor significantly reduced ripple to around 10-20 mV even under heavy load.
• Modification: Adding a 1000 microfarad capacitor in parallel is a simple and effective modification to drastically reduce voltage ripple.
• Application: The converter is shown being used as a stationary charging station for a 16V battery, with a custom enclosure for the unit and storage for its wires.