AK-230DIY 30VDC Regulated Power Supply(0-30VDC/1A)Parts Included:• Diodes: 1N4007(5)• Transistors: 2N5551(1)• Capacitors: 470uf/50V (1),10uf/25V (1), 2200uf/50V (1),0.1uf(CD104-2).• Resistors: 5.1K Ohm (1), 220 Ohm(1)• Switch (1), 5K Mini Potentiometer(1), 5mm 2 pin Terminal block (1).• Speaker Terminal (1), Heat Sink forTO220,5mm Red LED (1).• 3mm Screw (1)• One PCB Board.Let us Begin Soldering!We Require Solder Iron, Flux andSolder Wire.This Manual does not talk moreabout soldering, you need toknow basics of how to use solder.#The PCB Side with names and symbolsis “TOP” and opposite side is“BOTTOM”. We need to place thecomponents on the TOP and solder tothe BOTTOM.Step 1: Start with Diodes. Solder all1N4007 diodes at their respective placeson the PCB. The diode is labelled withits name on PCB top.* White mark on the diode indicates theN side (Cathode).The polarity of the Diode is important.The White band on the diode should goto the same direction of white band onthe PCB TOP.