Below is a PCB layout of the Adjustable-regulated power supply 3-30 V / 2.5 A :
R1 = 560R 1/4W R2 = 1,2 K 1/4W R3 = 3,9 K 1/4W R4 = 15K 1/4W R5 = 0,15 R 5W C1 = 100nF C2 = 2200uF 35-40V C3 = 100 pF C4 = 100uF / 35V P1 = 10K potensiometer D = B40 C3300/2200, bridge rectifier 3A TR1 = BD135 TR2 = 2N3055 IC = LM723
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