0-30V输出电流0.002-2A可调的稳压电源
R1 = 2,2 KOhm 1W R2 = 82 Ohm 1/4W R3 = 220 Ohm 1/4W R4 = 4,7 KOhm 1/4W R5, R6, R13, R20, R21 = 1