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30V-4A Adjustable Power Supply Circuit [CV, CC]

30V-4A Adjustable/Variable Power Supply Circuit/Schematic and PCB [CV, CC] ========================================== In this video, I explained a low noise/ripple adjustable/variable linear power supply circuit/schematic/PCB. It is based on the LM339 regulator and IRLZ44 N-Channel Mosfet. This power supply circuit/schematic/PCB offers constant current and constant voltage features. the input voltage could be anything between 3V to 35V and the output voltage could be between 1.28V to 30V. This power supply has been build on a two layers PCB board and all component packages are through-hole. The PCBs have been fabricated by the PCBWay company. The output noise of the power supply has been examined using the Siglent SDS2102X plus (SDS2000X Plus Series) oscilloscope. This oscilloscope offers a handy function named Power Analysis that can be used to examine the output noise/ripple. The output voltage is highly regulated as we expect from a linear power supply. All laboratory supplies are linear. A linear power supply offers better line regulation and load regulation and lower noise, although they are not efficient, in comparison with switching power supplies. ========================================== Altium Designer: https://www.altium.com/yt/myvanitar ========================================== Article: https://www.pcbway.com/blog/technolog... ========================================== Check other videos: http://bit.ly/2N9OlPa ========================================== Tools: Siglent SDM3045X:https://www.siglenteu.com/digital-mul... Siglent SDS2102X Plus: https://www.siglenteu.com/digital-osc... ========================================== Inspired by: GreatScott! Build your own Variable Lab Bench Power Supply URL:    • Build your own Variable Lab Bench Pow...   Inspired by: EEVblog EEVblog #221​ - Lab Power Supply Design - Part 1 URL:    • EEVblog #221 - Lab Power Supply Desig...   Inspired by: Electronoobs DIY variable bench power supply (less than 10$) URL:    • DIY variable bench power supply (less...