Diagram Skema Wiring Bench Power Supply

1. Jalur Power & Standby

PS_ON (Hijau): Ke saklar → GND.
PWR_OK (Abu): LED + resistor 220Ω → GND.

2. Output Tetap

3.3V → Oranye → Terminal Merah #1
5V → Merah → Terminal Merah #2
12V → Kuning → Terminal Merah #3
GND → Hitam → Terminal Hitam

3. Output Variabel

Dari	Ke	Catatan
PSU +12V	Buck IN +	Kuning
PSU GND	Buck IN -	Hitam
PSU +5V	Power Meter	Merah Tipis
Meter Ampere	Output +	Kuning Tipis
Buck OUT +	Fuse	5A
Fuse	Output +	Sensing
Buck OUT -	Shunt Meter	Hitam Tebal
Meter Out	Output -	Merah Tebal

PENTING!

Beban Dummy: Jika tegangan 12V tidak stabil, beri beban (resistor 10 Ohm 10W) pada jalur 5V.
Isolasi: Gunakan Heat Shrink pada semua sambungan solder untuk menghindari korsleting dengan casing metal.
Fuse: Pilih nilai fuse sedikit di bawah arus maksimal Buck Converter (misal: Buck 5A, gunakan fuse 4A).
Grounding: Pastikan kabel hitam tebal yang digunakan untuk jalur arus cukup besar agar tidak panas saat beban tinggi.

Bench Power Supply Wiring Diagram

1. Power & Standby (Mandatory)

PS_ON (Green): Connect to toggle switch → GND.
PWR_OK (Gray): LED + 220Ω resistor → GND.

2. Fixed Outputs

3.3V → Orange → Red Binding Post #1
5V → Red → Red Binding Post #2
12V → Yellow → Red Binding Post #3
GND → Black wires → Main Black Binding Post

3. Adjustable Output

From	To	Notes
PSU +12V	Buck IN +	Yellow
PSU GND	Buck IN -	Black
PSU +5V	Meter Power	Thin Red
Meter Ampere	Output +	Thin Yellow
Buck OUT +	Fuse	5A
Fuse	Output +	Sensing wire
Buck OUT -	Meter Shunt In	Thick Black
Meter Out	Output -	Thick Red

Important Notes

Dummy Load: If the 12V voltage is unstable, add a load (10 Ohm 10W resistor) to the 5V line.
Insulation: Use Heat Shrink on all solder joints to prevent shorting with the metal casing.
Fuse: Select a fuse rating slightly below the maximum current of the Buck Converter (e.g., if you want to buck 5A, use a 4A fuse).
Grounding: Make sure the thick black wire used for the current path is large enough to prevent overheating under high loads.