PSU-2448mk2 Power Supply Kit
A POWER TRANSFORMER IS REQUIRED FOR PROPER OPERATION.
DO NOT CONNECT THE 110/220V AC LINES DIRECTLY TO THE PSU PCB.
For this discussion, I'm assuming you're using the 1U PWR-TRAFO kit that I'm selling.
If you are using a di
ff
erent brand/model of transformer, please consult the manufacturer for their documentation.
110 VOLT OPERATION
For 110V operation, we need to connect the primaries in parallel.
Connect the BLUE and VIOLET wires together.
Connect the GRAY and BROWN wires together.
Connect both across the 110V line.
Secondary Wiring
On the secondary side, we need to connect the RED and ORANGE together. (this will be the center-tap wire CT). The center-tap
wire will connect to the CT pad on the PCB.
Connect the BLACK wire to AC1 on PSU PCB.
Connect the YELLOW wire to AC2 on PSU PCB.
220 VOLT OPERATION
For 220V operation, we need to connect the 2 primaries in series.
Connect the GRAY and VIOLET wires together.
220V is applied across the BLUE and BROWN wires.
Secondary Wiring
On the secondary side, we need to connect the RED and ORANGE together. (this will be the center-tap wire CT). The center-tap
wire will connect to the CT pad on the PCB.
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