I am no expert on psu's and such, but why does the falcon and CT60e require so many amperes?
Amiga 1200s outfitted with 060 accelerator boards and mechanical hdd's work ok with standard 3A and 4.5A stock amiga psu'shttp://www.ianstedman.co.uk/Amiga/amiga ... plies.html
It's anyhow different.
The 68060 and I think also those Xilinx FPGA chips are running with 3.3V. (The FPGAs are 5V tolerant to work with signals of the Falcon mainboard)
The PicoPSU is following the ATX stadard and so it directly provides 3.3 Volts. It also provides 5V and from the power inlet it gets already stabilisized 12V from the external power supply.
So the PicoPSU has all voltages to supply processor, falcon mainboard and drives. 3.3V, 5V and 12V. (It also has -5V and -12V but that is not required by Falcon and ct60(e).
You have to understand, it's very important that the power supply has to supply the system with the correct voltages and amperes.
You can have a powersupply with 90 Watts which has 30 Watts on 5V, and 30 Watts on 12V and 30 Watts on 3.3V. Thats 6A on 5V, 2,5A on 12V and 9 A on 3,3V. You also can have 90 Watts as 10W on 5V (2A), 10W on 12V (0,83A) and 70W on 3,3V (21A), and so on, any combination which is together 90W. The first given example would be ok 3,3V and it also has enough on 5V. Because 9A is more than 8A. The second example is fine on 3,3V as it has 21A which is much more than 8A. But the 5V 2A would be too weak to support all the falcon logics. The seocond would not supply stable the whole system.
You see, 90 Watts is not 90 Watts. It must be weighted correctly.
Amiga 1200 power supply is totally different. The original power supply only provides 5V, 12V and -12V. In total it's just 25 Watts. 68060 3.3V 8A maximum would already be more than these 25 Watts, so such turbocards already would run the power supply overspec, so I think they have some undocumented reserves. But these power supplys have no 3.3V which are needed for the 68060. Also the trapdoor connector has no -3.3V. So the turbocard in the trapdoor has to take the 5V or 12V and regulate it down to 3.3V. So they have voltage regultor components, capacitors and so on. But anyhow it looks like the amiga powesupply runs overspec with such a turbo card.
Power without the Price. It's not a bug. It's a feature. _/|\_ATARI
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