30V/4A Adjustable Power Supply (CC-CV)

By Hesam Moshiri and Anson Bao

In this article/video, I introduced an adjustable 30V-4A linear power supply that provides constant voltage and constant current adjustment. The output noise of the power supply is low and has measured using the power analysis feature of the Siglent SDS2102X Plus oscilloscope. All component packages are through-hole, so you don’t need any special tool for soldering. Let’s get started!

Specifications

• Input Voltage (max): 35V [30V, max-tested]
• Output Voltage (min): 1.28V
• Output Voltage (max-tested): 27.35V [28.9Vin, no load, 25C]
• Output Current: 1.1mA to 4A(max continous)
• Output Noise (no load): 6-7mVpp
• Output Noise (1A load): 6-7mVpp
• Output Noise (2A load): 8-10mVpp

30V/4A Adjustable Power Supply (CC-CV) – [Link]

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