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Author Topic: Specs on BFL Single power adapter?  (Read 12065 times)
jddebug
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March 12, 2012, 05:54:19 AM
 #41

I got my clamp meter in my bag for work tomorrow, so I'll see what's what tomorrow morning or early afternoon.

Thank you.
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Inaba
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March 12, 2012, 02:06:15 PM
 #42

Ok, got the numbers:

1.7A @ Idle
5.9A @ At 100% mining

So we're looking at around 70w of actual usage on a quality PSU instead of a power brick.  Not terrible.

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
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March 12, 2012, 02:06:38 PM
 #43

Ok, got the numbers:

1.7A @ Idle
5.9A @ At 100% mining

So we're looking at around 70w of actual usage on a quality PSU instead of a power brick.  Not terrible.

Sweeeeeet.

Mining Rig Extraordinaire - the Trenton BPX6806 18-slot PCIe backplane [PICS] Dead project is dead, all hail the coming of the mighty ASIC!
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March 12, 2012, 02:17:22 PM
 #44

Ok, got the numbers:

1.7A @ Idle
5.9A @ At 100% mining

So we're looking at around 70w of actual usage on a quality PSU instead of a power brick.  Not terrible.


Awesome which is what I guessed it would be (cheapo PSU being ~75% to 80%).  3x barrel connectors on 1 PCIe connector should be no issue then.  Hopefully I get an answer back today.  I am hoping they will do a small run as a favor as the last time I worked with them was for 2,000 custom SAS wiring (building out a custom SAN solution).
BTC-engineer
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March 12, 2012, 05:41:08 PM
 #45

Ok, got the numbers:

1.7A @ Idle
5.9A @ At 100% mining

So we're looking at around 70w of actual usage on a quality PSU instead of a power brick.  Not terrible.


Thanks for measurement.
What was your environment temperature?
Did you also measured the voltage in both states and if, was it exactly +12V ?

This means the BFL single only takes ~70.8W when mining.
With a high efficiency Power Supply (let say one with 93%) this are still ~75.8Watt per BFL singleThanks for measurement...
Would also be interesting to see how much the power consumption decreases by improving the airflow.
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March 12, 2012, 05:53:11 PM
 #46

Temp is right around 72F.  I did not take voltage measurements as it would require me to cut the wire and put the multimeter in line.  If that's really important, then I can do it, but I can't see how it's terribly relevant for our purposes, yeah?

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
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Gerald Davis


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March 12, 2012, 05:56:25 PM
 #47

Temp is right around 72F.  I did not take voltage measurements as it would require me to cut the wire and put the multimeter in line.  If that's really important, then I can do it, but I can't see how it's terribly relevant for our purposes, yeah?

Watts is what matters but I am sure the PSU is running at 12V +/-5% so it really is just double checking.  If the PSU was running hot (>12VDC) then the amps would be lower for the same amount of wattage.
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March 12, 2012, 06:11:33 PM
 #48

Temp is right around 72F.  I did not take voltage measurements as it would require me to cut the wire and put the multimeter in line.  If that's really important, then I can do it, but I can't see how it's terribly relevant for our purposes, yeah?

Watts is what matters but I am sure the PSU is running at 12V +/-5% so it really is just double checking.  If the PSU was running hot (>12VDC) then the amps would be lower for the same amount of wattage.

I don't know this specific low-cost power supply. But I wouldn't be too surprised if the voltage would be out of the +/-5% window.

Interesting that the external power-supply is getting so hot, that you nearly can't touch it anymore, if it "only" has ~10Watt power-loss. Hmm...
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March 12, 2012, 06:56:44 PM
 #49

Temp is right around 72F.  I did not take voltage measurements as it would require me to cut the wire and put the multimeter in line.  If that's really important, then I can do it, but I can't see how it's terribly relevant for our purposes, yeah?

Watts is what matters but I am sure the PSU is running at 12V +/-5% so it really is just double checking.  If the PSU was running hot (>12VDC) then the amps would be lower for the same amount of wattage.

I don't know this specific low-cost power supply. But I wouldn't be too surprised if the voltage would be out of the +/-5% window.

Interesting that the external power-supply is getting so hot, that you nearly can't touch it anymore, if it "only" has ~10Watt power-loss. Hmm...

I put the PSU in front of a very small low velocity fan and it became a lot cooler. Probably just because the plastic does not dissipate the heat very well.

BFL stated the voltage specs for the single, I believe the maximum was as high as 14 volts but better double check for the post around here somewhere.

Mining Rig Extraordinaire - the Trenton BPX6806 18-slot PCIe backplane [PICS] Dead project is dead, all hail the coming of the mighty ASIC!
Inaba
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March 12, 2012, 06:57:49 PM
 #50

I went ahead and cut the insulation.  12.1v at full load (12.22v at idle).

I also measured ambient - it's around 80F not 72F, if we can believe my IR thermometer.


If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
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Gerald Davis


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March 12, 2012, 08:53:28 PM
 #51

Tentative good news.  OEM is considering the order a small run.  Not sure if it is past business or that the economy is slow.  In the past I know the have balked at runs below thousand units.  No idea on pricing yet, no need to respond saying you want one, and don't get your hopes up yet.

My contact called me back.  He asked for a wiring diagram to give to the team. Anyone have experience making wiring drawings?  Smiley
Diagram is pretty simple but my graphical skills are lacking.  If anyone has experience and wants to help let me know in thread or by PM.

Also if someone can measure the PSU barrel adapter.  Measure in mm the length of the metalic part.  I know BFL indicates 12mm but I just want to make sure.  12mm seems a very strange length for 2.5mm/5.5mm barrel plug.  Can't seem to find a part # anywhere (Molex, digikey, half dozen suppliers, etc).  Found 8mm length and 14mm length but not 12mm length.  Huh  If someone from BFL is reading this and has part # for the barrel power socket on the BFL Single board it would help finding an exact match.
Inaba
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March 12, 2012, 09:09:51 PM
 #52

I measure 10mm for metallic part and plastic tip.  8mm of metal and 2mm plastic tip.


If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
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Gerald Davis


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March 12, 2012, 09:10:33 PM
 #53

I measure 10mm for metallic part and plastic tip.  8mm of metal and 2mm plastic tip.

Thanks.  I could have swore Sonny said 12mm but I may have been wrong.
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March 12, 2012, 09:11:02 PM
 #54

I went ahead and cut the insulation.  12.1v at full load (12.22v at idle).

I also measured ambient - it's around 80F not 72F, if we can believe my IR thermometer.



Thanks for the measurement.

I try to wrap up the data.

BFL single revision: 1
Firmware version: ?
Environment temperature: 80F / 26.7°C
Supply voltage: +12V
Power supply voltage: 115VAC
Power supply frequency: 60Hz
Power consumption single only @idle: ~20.8W
Power consumption single only @mining: ~71.4W
Power supply loss @mining: ~13.6W
Power consumption incl. power supply @mining: ~85W
Power supply efficiency @mining: ~84%  

Could you please verify it.
I guess the power consumption will slightly decrease if you run the unit with a lower environment temperature.
I will verify this data with my own measurements when receiving my first 2 units.
Inaba
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March 12, 2012, 09:13:40 PM
 #55

Revision is v1, not 2, unless you are counting the smaller prototypes as rev1.

Firmware I don't know.

Power Consumption including PSU brick is between 85 - 89w I think... I don't have my kill-a-watt here though.  It's definitely more than 80w and definitely less than 90w.  I think 85w is a safe average.


If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
BTC-engineer
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March 12, 2012, 09:15:08 PM
 #56

Revision is v1, not 2, unless you are counting the smaller prototypes as rev1.

Firmware I don't know.

Power Consumption including PSU brick is between 85 - 89w I think... I don't have my kill-a-watt here though.  It's definitely more than 80w and definitely less than 90w.  I think 85w is a safe average.



Ok, thanks for checking. I have changed it.
BFL-Engineer
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March 12, 2012, 09:15:42 PM
 #57

Tentative good news.  OEM is considering the order a small run.  Not sure if it is past business or that the economy is slow.  In the past I know the have balked at runs below thousand units.  No idea on pricing yet, no need to respond saying you want one, and don't get your hopes up yet.

My contact called me back.  He asked for a wiring diagram to give to the team. Anyone have experience making wiring drawings?  Smiley
Diagram is pretty simple but my graphical skills are lacking.  If anyone has experience and wants to help let me know in thread or by PM.

Also if someone can measure the PSU barrel adapter.  Measure in mm the length of the metalic part.  I know BFL indicates 12mm but I just want to make sure.  12mm seems a very strange length for 2.5mm/5.5mm barrel plug.  Can't seem to find a part # anywhere (Molex, digikey, half dozen suppliers, etc).  Found 8mm length and 14mm length but not 12mm length.  Huh  If someone from BFL is reading this and has part # for the barrel power socket on the BFL Single board it would help finding an exact match.

The metallic part of the barrel jack is 12mm, but it can be longer as well. The socket part number is: CP-002BH-ND (Digikey part number)
and the manufacturer part number is: PJ-002BH.


Good Luck,

BF Labs Inc.  www.butterflylabs.com   -  Bitcoin Mining Hardware
Inaba
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March 12, 2012, 09:17:21 PM
 #58

I just checked my "shipping" PSU tip.. I have been working on my pre-release PSU brick - the tip is 12mm.  10mm metal and 2mm plastic.

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
Inaba
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March 12, 2012, 09:17:43 PM
 #59

Oh whoops, guess my info is redundant now Smiley

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
DeathAndTaxes
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Gerald Davis


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March 12, 2012, 09:26:16 PM
 #60

The socket part number is: CP-002BH-ND (Digikey part number) and the manufacturer part number is: PJ-002BH.

Perfect.  Thanks.
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