A variable power supply is one that includes some means for the user to easily adjust the output voltage and sometimes the current . Adjustment is most often accomplished with a potentiometer, but may also be done with an analog control voltage, a digital input, an autotransformer, etc. Specification: Brand Name : YAXUN DIY Supplies : Electrical Display Type : Digital Only Model Number : 305D Supply Voltage : 0--30V voltage : 0--30V adjustable current : 0--5A adjustable quality : high quality input electric : AC 110V /220V adjustable type : mobile repair testing machine Measuring Range : 0--5A Colour : Black Package Include 1 x YAXUN YX-305D VARIABLE DC POWER SUPPLY Industryparts. pk is the Best Online Shopping website for YAXUN YX-305D VARIABLE DC POWER SUPPLY. Here you get YAXUN YX-305D VARIABLE DC POWER SUPPLY at a reasonable price in Karachi, Lahore, Islamabad, Rawalpindi, Peshawar, Quetta, Multan, and all over Pakistan.