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 Voltage & Current】This DC Converter Input voltage Support AC 110V-120V or 220V-240V , Adjustable Volt Output Range 0-24V ; adjustable Amp
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Adjusted between 0 and nominal value with fine regulating and coarse regulating. Constant pressure and constant current switch automatically. Small
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