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Section 3: Building the Power Supply PCB 
This section details the process of building the power supply circuit board. Begin by 
carefully emptying the contents of the envelope marked “PR-101 Power Supply” into a 
broad soup bowl, as shown below. The envelope might also be marked “PR-102 power 
supply”. FYI, the power supply did not change between the PR-101 and PR-102. In 
general, you’ll start with the components that lay closest to the board, working your way 
towards the taller components. 
 
Figure 1-Empty the power supply components into a soup bowl 
Component Order 
 
Figure 2-Component side of power supply PCB before loading