DB-E91-101A this is a Main Control PCB (Printed Circuit Board) typically found in high-end HVAC systems, specifically Inverter Air Conditioners (likely Daikin or a similar brand based on the “EB0510(B)” and “MODEL FXZHere is a detailed breakdown of the components and sections visible:
1. Power Supply Section (Bottom)
This area handles the incoming AC power and converts it into usable DC voltages for the board.
Fuse: A glass tube fuse (bottom left) provides overcurrent protection.
Inductor/Choke: The large copper coil wrapped around a ferrite core helps with EMI filtering and power factor correction
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