MiniMig with AGA

[Gulliver]

I am sorry if it has been asked before (if that is the case please point me to the apropiate post). I want to know about the fpgaarcade´s power consumption, how much is it?.

Thanks

[yaqube]

I want to know about the fpgaarcade´s power consumption, how much is it?

The current consumption of the Replay board running the latest Minimig AGA core with a mouse and keyboard connected is 600 mA (max). It seems 1 A is more than enough for the base board.

[Gulliver]

@yaqube
Thank you for your answer!

[freqmax]

@yaqube, volts?

[Gulliver]

@yaqube, volts?

He mentioned long ago 5 volts.

[freqmax]

Just wanted to be sure. The board uses regulators. So the input voltage can vary with the same power.

[mikej]

The input voltage must be regulated 5V and cable of supplying 1A or more. The 5V is used directly, the lower voltages are generated internally. There is a polyfuse (2A) and over voltage/reverse protection.
Ideally the 5V would be generated as well, but that would need another DC-DC and increase the cost.

You can also power it through the molex (ata hard disk power) connector from a PC power supply, assuming you have frigged the power on line.
Mike

[freqmax]

Assuming a cable area of 0.205 mm² (cat.5) which gives 0,188 ohm/meter and 5 V with a 5% tolerance. Ohms law U=R*I gives the maximum cable length to be 2,2 meters. Quite tight.

I hope the next board at least has space to populate it with onboard 5 V regulation.

[ferrellsl]

Assuming a cable area of 0.205 mm² (cat.5) which gives 0,188 ohm/meter and 5 V with a 5% tolerance. Ohms law U=R*I gives the maximum cable length to be 2,2 meters. Quite tight.

I hope the next board at least has space to populate it with onboard 5 V regulation.

Are you talking about the length of copper wire between the board and the AC/DC converter that plugs into the wall outlet?  Or the total combined circuit length of the board itself?  To a FPGA board-designing geek, your question is probably quite obvious, but to a novice like me, it isn't as clear.  LOL

[mikej]

Assuming a cable area of 0.205 mm² (cat.5) which gives 0,188 ohm/meter and 5 V with a 5% tolerance. Ohms law U=R*I gives the maximum cable length to be 2,2 meters. Quite tight.

I hope the next board at least has space to populate it with onboard 5 V regulation.

Why would you run cat.5 cable from the PSU plugged into the wall to the dc power jack?
Personally I would use somewhat chunkier cable, like the one which comes attached?

[the_leander]

Why would you run cat.5 cable from the PSU plugged into the wall to the dc power jack?

For the lulz?

[freqmax]

I just used the cat.5 as an example to demonstrate that onboard regulators have an advantage as all wires inherently will loose some voltage. The important factors is the conductor diameter and voltage tolerance.

[ferrellsl]

I just used the cat.5 as an example to demonstrate that onboard regulators have an advantage as all wires inherently will loose some voltage. The important factors is the conductor diameter and voltage tolerance.

What does that have to do with the price of tea in China?

And what appliances need a power cable longer than 2.2 meters anyway?  Get an extension cord!

[Terminills]

What does that have to do with the price of tea in China?

And what appliances need a power cable longer than 2.2 meters anyway?  Get an extension cord!

My wisp client does(currently it's a 75' run)...   but then again it uses poe. =D

[logikstate]

Are we nearly there yet?

[Louis Dias]

2 more weeks!

:-)

But seriously, even without "feature creep" these things take time.  Considering Commodore bailed in '93/94, you'd think patience would be the order of the day in this community...  

FYI: In a few weeks this thread will be 2 years old!