Original Hexagram 45. GATHERING TOGETHER (MASSING) (Ts'ui)
Transformed Hexagram 17. FOLLOWING (Sui)
Ok.
My interpretation for your power supply:
Gathering (45): You need to gather some capacitors? (or maybe a heat sink for the 'massing'?)
Following (17): Clearly it's telling you to use a Voltage Follower. :D
toroid transformer?
Original Hexagram 45. GATHERING TOGETHER (MASSING) (Ts'ui)
Transformed Hexagram 17. FOLLOWING (Sui)
Ok.