This is an adjustable power supply. we can adjust the voltage using this circuit. it's an easy circuit diagram
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▲ADJUSTABLE DC POWER SUPPLY🍧- 0-30 volts and 0-5Amp outputs with 3 LED digital BRIGHT display ,with resolution of 0.1V（100mV)and 0.01A(10mA). ▲ CC
DC Bench Power Supply 30V 5A Adjustable 3-Digital LED Display, Switching Lab Power Supply for Etching Aluminum, DIY Project, Repairing
