Construction and Setup Guide
- Solder 330Ohm Resistors R1,R2
- Solder 0.1uF Capacitors C1,C2
- Solder 3mm LEDs LED1,LED2
- Solder the 4 Fuseholders
If using the LM34 skip step 5
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Solder the 1kOhm Trimmer R3 Solder the the 5kOhm trimmer R4
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Join in pairs the Anderson Powerpole housings and insert PCB contacts into housing.
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Solder PCB Contacts and housing to board ensuring the correct orientation.
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Install Amphenol Receptacle until locked in place, then solder.
If not using the LM34 skip to step 14
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Solder long wires to the contacts of the LM34. Preferably use different colours and note which colour corresponds to which pin.
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Open PSU case and locate heatsink.
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Put LM34 in thermal contact (use thermal grease or thermal pad) and secure by some means (Hot glue?).
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Close PSU case and feed wires through gap in case, avoiding the fan.
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Either Solder wires directly to IC1 or make use of jumper pins.
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Insert a suitable fuse into at least one of the fuse holders.
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Plug PCB into PSU and power on at socket.
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Use Voltmeter across output and adjust R3 until voltage reading is approximately 13.8V - Each PSU is different, the over-voltage cutoff is around this voltage so you may be able to go slightly higher, or might need to go slightly lower. While adjusting, if voltage drops to zero, then the overvoltage protection has been activated. Adjust R3 for lower voltage, power off the PSU and wait until PSU fan stops, Plug in and resume adjustments.
If not using LM34
- Adjust R4 for a suitable default fan voltage. As load increases the fan will also increase.
Current Sharing (for when using 2 or more PSUs)
Join PCB's together via the Current Share (CS).
Link in parallel the two boards.
Caution: Outputs should be set to the same voltage or very similar voltages otherwise we risk damaging the PSU's and anything connected to them.
