VI that measures power consumption(HP 4155A)

can anyone help me in writing a VI for measuring power consumption
using parameter analyser 4155A.
Iam using HP 4155A semiconductor parameter analyser for setting up constant power source to the circuit.
now i have to measure the power consumption.

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Ian F
Since LabVIEW 5.1... 7.1.1... 2009, 2010
依恩与LabVIEW
LVVILIB.blogspot.com

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I don't see anything wrong with your approach; however, I'll throw out a few thoughts:
If you could tie the sending of the change-voltage command (in your DLL) to the START TASK command for DAQ, you could reduce the variability in the time between the two events. Maybe that's important, maybe not.
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Measuring Power Consumption

I bought a Kill-a-Watt power meter some time ago and used it to measure how much power my MAc ***** up. I currently have a Mini and it's power consumption I think is tremendous. I am considering purchasing a MacPRO sometime in the next few months and was wondering what the MacPro, or any other Mac for that matter, uses in electricity in 3 different modes: sleep, pegged, running
Mac Mini:
running: 19-20 watts
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sleep: 2-3 watts
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Thanks, Jim

Here is what Apple has to say:
http://www.apple.com/environment/resources/calculator.html
Also:
http://www.apple.com/environment/resources/specs.html
-mj
[email protected]
Message was edited by: macjack

Higher power consumption after suspend

Hello,
It seems that my power consumption is significantly higher after resuming from a suspend than before. I suspend with the systemctl command. Measuring the battery usage (with powertop or looking at /sys/class/power_supply/BAT0/power_now on my laptop), I get the following numbers :
- 6-7 W before suspend
- 10-11 W after
Those number are quite stable in time, in particular the higher consumption stays until shutdown. I have tried looking at the power decomposition of powertop, and it seems that the backlight display consumption is indeed higher, although I keep the same luminosity level. I tend to consider the decomposition usage by powertop as a guess estimate anyway, so I am not sure whether this means anything.
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Guillaume

Have a look at powertop before and after suspend. I noticed that some power saving options get turned off when suspending. I don't have a solution though.

Quad G5: Actual Power Consumption

I haven't seen the numbers posted, so I thought I'd share from this config:
Quad 2.5 Ghz G5 (Rev A, dual pumps)
4.5 GB PC2-4200 RAM (4 x 1 GB, 2 x 256 MB)
Geforce 6600
Western Digital 250 GB SATA Drive (WD2500JS)
Seagate 400 GB SATA Drive (ST3400832AS)
No firewire or USB devices connected (except keyboard, mouse)
Here was the measured power consumption (in watts):
455 Peak measured (with 4 CPU's at 100%, disks writing)
275 Idle (CPU at Highest)
245 Watching a DVD (CPU at Automatic)
210 Idle (CPU at Reduced)
43 Mac Sleeping
The specs page lists "At least 10A" required at 120 volts. Even if you squeezed 9 drives into the G5, I don't see how one would ever approach 1200 watts.
I use a Belkin 1500VA (830 watts) UPS, which is 55% loaded when the Quad is at its peak, and can sustain that for around 10 minutes.
At 7 cents per kWh, running BOINC could cost 77 cents per day, running idle would be 36 cents, and sleeping 8 cents.

I posted similar results a few months ago. Amazing that people were worried (when the Quads first appeared) that they'd have to run new power lines to support them.
I used a 'Kill A Watt' to measure - what did you use?

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Hello,
i did the offered upgrade to W8, i am very satisfied with the W8 system, but the problem is that the notebook is consuming battery also in the hibernate mode.
I would understand that the power consumption will be in the sleep mode, but on the hibernate mode?
I found out that when the computer enters the sleep mode or hibernate mode and i open the lid, the computer automatically starts EVEN if the option to "power up computer when lid open" is unchecked.
When i select to power off computer - it does not react to open lid, i have to press the power button.
The problem could be in the windows system, that the OS tolds the computer to wake up when the lid closed.
The problem is, that the computer starts charging everytime i wake up from hibernation (i had my office 15minutes from home, and it consumes about 1-2% from battery.
It is quite anoying that my full charge battery capacity is on 83% of original one (i bought my PC in June2012).
I had Lenovo T60 7yrs ago, and there was an option to start charging the battery only when the battery charge was under 95% and it saves the battery capacity.
Does anybody have some clue?
Thank you!

Fact is that battery capacity will be reduced even if the notebook is completely OFF. Battery capacity will lose few percent of capacity. To reduce this check - http://aps2.toshiba-tro.de/kb0/FAQ9C015N0001R01.htm
Useful document for you can be also http://aps2.toshiba-tro.de/kb0/HTD9401AZ0001R01.htm
> I had Lenovo T60 7yrs ago, and there was an option to start charging the battery only when the battery charge was under 95% and it saves the battery capacity.
As far as I know such option is not available on Toshiba notebooks. When connected to AC power supply notebook starts to load battery automatically.
There is no option to change anything.

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If you don't use Skype then I'd delete it.
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+5W power consumption when playing audio on X201 with Linux

Hi folks!
My Thinkpad X201’s power consumption raises from ~10W to ~15W when playing any kind of audio under linux. This problem does not seem to be CPU-related (for example when streaming with pulseaudio over ethernet instead of playing directly on the X201 the power consumption does hardly increase) and does not occur under Windows. I’m using Fedora x86_64 16 with Kernel v3.2.1 but it also occured with a v3.2.1 vanilla kernel; Fedora 14 and 15; Ubuntu 11.10 and 12.04 and so on.
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I measured power consumption with powertop but also confirmed with readings from /sys:
while true; do bc -l <<< "$(cat /sys/class/power_supply/BAT0/current_now)/10^6*$(cat /sys/class/power_supply/BAT0/voltage_now)/10^6"; sleep 1; done
The output of lspci -vvv:
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
Subsystem: Lenovo Device 215e
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 43
Region 0: Memory at f2520000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee0f00c Data: 41c1
Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
ExtTag- RBE- FLReset+
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
Capabilities: [100 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
VC1: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=1 ArbSelect=Fixed TC/VC=02
Status: NegoPending- InProgress-
Capabilities: [130 v1] Root Complex Link
Desc: PortNumber=0f ComponentID=00 EltType=Config
Link0: Desc: TargetPort=00 TargetComponent=00 AssocRCRB- LinkType=MemMapped LinkValid+
Addr: 00000000fed1c000
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
cat /proc/asound/card0/codec#0:
Codec: Conexant CX20585
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x14f15069
Subsystem Id: 0x17aa2155
Revision Id: 0x100302
No Modem Function Group found
Default PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=4, o=0, i=0, unsolicited=1, wake=0
IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x10 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L
Control: name="Master Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Device: name="CONEXANT Analog", type="Audio", device=0
Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1
Amp-Out vals: [0x3b 0x3b]
Converter: stream=8, channel=0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x11 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L
Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1
Amp-Out vals: [0x3c 0x3c]
Converter: stream=0, channel=0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x12 [Audio Output] wcaps 0x611: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x13 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out
Control: name="Beep Playback Volume", index=0, device=0
ControlAmp: chs=1, dir=Out, idx=0, ofs=0
Control: name="Beep Playback Switch", index=0, device=0
ControlAmp: chs=1, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x07, nsteps=0x07, stepsize=0x0f, mute=0
Amp-Out vals: [0x00]
Node 0x14 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L
Device: name="CONEXANT Analog", type="Audio", device=0
Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1
Amp-In vals: [0x81 0x81] [0x80 0x80] [0x81 0x81] [0x80 0x80]
Converter: stream=0, channel=0
SDI-Select: 0
PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 4
0x17 0x18 0x23* 0x24
Node 0x15 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L
Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1
Amp-In vals: [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a]
Converter: stream=0, channel=0
SDI-Select: 0
PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 4
0x17* 0x18 0x23 0x24
Node 0x16 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L
Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=1
Amp-In vals: [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a] [0x4a 0x4a]
Converter: stream=0, channel=0
SDI-Select: 0
PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 4
0x17* 0x18 0x23 0x24
Node 0x17 [Audio Selector] wcaps 0x30050d: Stereo Amp-Out
Amp-Out caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=0
Amp-Out vals: [0x02 0x02]
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 4
0x1a 0x1b* 0x1d 0x1e
Node 0x18 [Audio Selector] wcaps 0x30050d: Stereo Amp-Out
Amp-Out caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=0
Amp-Out vals: [0x00 0x00]
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 4
0x1a* 0x1b 0x1d 0x1e
Node 0x19 [Pin Complex] wcaps 0x400581: Stereo
Pincap 0x0000001c: OUT HP Detect
Pin Default 0x042140f0: [Jack] HP Out at Ext Right
Conn = 1/8, Color = Green
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=37, enabled=1
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x1a [Pin Complex] wcaps 0x400481: Stereo
Pincap 0x00001324: IN Detect
Vref caps: HIZ 50 80
Pin Default 0x61a190f0: [N/A] Mic at Sep Rear
Conn = 1/8, Color = Pink
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00: VREF_HIZ
Unsolicited: tag=38, enabled=1
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x1b [Pin Complex] wcaps 0x400581: Stereo
Pincap 0x00011334: IN OUT EAPD Detect
Vref caps: HIZ 50 80
EAPD 0x2: EAPD
Pin Default 0x04a190f0: [Jack] Mic at Ext Right
Conn = 1/8, Color = Pink
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x00: VREF_HIZ
Unsolicited: tag=38, enabled=1
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x1c [Pin Complex] wcaps 0x400581: Stereo
Pincap 0x00000014: OUT Detect
Pin Default 0x612140f0: [N/A] HP Out at Sep Rear
Conn = 1/8, Color = Green
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x40: OUT
Unsolicited: tag=37, enabled=1
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x1d [Pin Complex] wcaps 0x400581: Stereo
Pincap 0x00010034: IN OUT EAPD Detect
EAPD 0x2: EAPD
Pin Default 0x601700f0: [N/A] Speaker at Sep N/A
Conn = Analog, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Pin-ctls: 0x20: IN
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x1e [Pin Complex] wcaps 0x400481: Stereo
Pincap 0x00000024: IN Detect
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x1f [Pin Complex] wcaps 0x400501: Stereo
Pincap 0x00000010: OUT
Pin Default 0x901701f0: [Fixed] Speaker at Int N/A
Conn = Analog, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 2
0x10* 0x11
Node 0x20 [Pin Complex] wcaps 0x400781: Stereo Digital
Pincap 0x00000010: OUT
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 1
0x12
Node 0x21 [Audio Output] wcaps 0x611: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0x160]: 44100 48000 96000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x22 [Pin Complex] wcaps 0x400781: Stereo Digital
Pincap 0x00000010: OUT
Pin Default 0x40f001f0: [N/A] Other at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 1
0x21
Node 0x23 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x04, stepsize=0x2f, mute=0
Amp-In vals: [0x02 0x02]
Pincap 0x00000020: IN
Pin Default 0x90a601f0: [Fixed] Mic at Int N/A
Conn = Digital, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Node 0x24 [Audio Mixer] wcaps 0x20050b: Stereo Amp-In
Amp-In caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=1
Amp-In vals: [0x00 0x00] [0x00 0x00]
Power states: D0 D1 D2 D3 D3cold
Power: setting=D0, actual=D0
Connection: 2
0x10 0x11
Node 0x25 [Vendor Defined Widget] wcaps 0xf00000: Mono
Is anyone able to confirm this problem or does anyone have a solution? I’m really desperate since I often use my Thinkpad as a big but wonderful portable music player (with headphones of course! Don’t want to annoy my fellow trainpassengers …).
Thanks in advance
Michael

Any updates on this?

Power Consumption in UCS

Hi,
We are running 4 Chassis in our enviroment with firmware 1.4 (3q) and recently we had an issue with one of the PSU (PSU2) in chassis 2 and we got it replaced and after that we are observing that 1 of the PSU in each chassis is showing as "Power Save" (PSU-Details_All_Chassis.JPG) state.
I want to understand that how Power consumptions works in UCS, I have also attached "Power Groups" (Power-Group_Details.jpg) snap shot for the reference.
Want to understand what is "unbounded" & "cap-ok". When will "power save" state PSU will be ON state and does it will go again in "power save" state.
Thanks,
Amit Vyas

Amit,
Again Jeremy is correct. given your illustration grid is the way to go.
The best way to figure out your power requirements however is to use the following tool:
http://www.cisco.com/assets/cdc_content_elements/flash/dataCenter/cisco_ucs_power_calculator/
To answer your question however about the N+1 I have included an explanation below.
Also instituting power capping at the chassis level requires the following:
IOM, CIMC, and BIOS version 1.4 or higher
2 PSUs
A minimum of 3788 AC watts should be set for each chassis. This converts to 3400 watts of DC power, which is the minimum amount of power required to power a fully-populated chassis.
This means that after 1.4 release the minimum with power capping is 2 PSUs. For example previous to 1.4 release a system that was set for N+1 (1+1 for example) would need to have 3 PSUs N+1 (2+1) in releas 1.4 and greater. This is because of the power groups minimum requirement.
If the power is required the +1 should be made available to meet the redundancy requirements. If it is not needed it is turned off / power save.
Please let me know if this helps.

Power consumption on sleep

After upgrading to Mavericks, I have noticed that the power consumption on battery on my MBP when in sleep with the lid closed is way up. 99% charge when puting the computer to sleep, 45% after 12 hours when opened. What gives? Any suggestions?

Actually, the APC 1200XS works fine if and only if the G5 is already powered on. I'm running a stock Quad G5 + and extra 4GB of RAM, but nothing else off of the UPS.
It's actually not uncommon to have appliances that draw significant currents/power on startup that exceed the basic circuit rating. Things like motors/pumps can draw large currents on startup. Circuit breakers and fuses need these high current levels to be present for periods longer than the lifetime of an inrush current situation. Most reactive components, i.e. the inductors and capacitors, in a large power supply like the Quad G5's only take few 10's of milliseconds to charge up, so the high draw subsides quickly.
I'd also be surprised if your APC 1500XS doesn't have the same issue as I have since my guess is that APC builds a class of UPS with the same basic electronics on the input side and then just modifies the output side a bit along with the battery capacity. You can test whether you have this issue as well by putting the machine to sleep, pull the UPS's plug from the wall and then wake up the computer (if it doesn't wake due to the power being lost).

Notebook Fan 50% of power consumption

Hello Folks,
I have a Lenovo T410, without dedicated GPU, it uses the i5's integrated Intel GPU.
My fan keeps to always be above 2'500 rpm and goes up to 4'500 rpm very often (playing movie etc.). Powertop 2.0 shows that the power consumption of the notbook is about 13 to 17W, which is good in my opinion. But it says that the fan takes between 2.5 and 8.5W... Can this be right? This would mean that the fan takes half of the whole power consumtion of the notebook?
I didn't install any power management tools like the laptop-power-tools package or similar.
What would be the best way to handle this? I wouldn't like to spin down the fan manually. Maybe it is just always spinning to fast?
~ Tectu
Last edited by Tectu (2012-06-17 17:22:17)

You need the lm_sensors package for it.

Since I have upgraded from 7.1 then the power consumption increased slightly unbelievable. I have new batteries in my iphone 5 and when I had at ios 7 so was consumption that allows the battery envelope in two days and with ios 7.1 so is it only 12 hours

Since I have upgraded from 7.1 then the power consumption increased slightly unbelievable. I have new batteries in my iphone 5 and when I had at ios 7 so was consumption that allows the battery envelope in two days and with ios 7.1 so is it only 12 hours before I need to recharge the battery.

Wrote a little wrong the first time!
Then I upgraded to 7.1 so have power consumption increased slightly unbelievable. I have new batteries in my iphone 5 and when I had at ios 7 so was consumption that allows the battery envelope in two days and with ios 7.1 so is it only 12 hours before I need to recharge the battery.

Nokia N86 power consumption

I have a Nokia N86 which is 2 years old.
I have been experiencing a problem with battery drainage since I bought it. The battery meter suddenly drops from 5 bars to one bar when I browse the net using HSDPA, after about 30mins or so, when the phone is already hot. I sent it into service once, because it happened very randomly and it did not look like a major issue. They said they recalibrated the battery. After a week of somehow uniform battery draining, the battery started going flat suddenly, again, from 5-6 bars to "low battery".
I went to a service center again to check if it's the battery or the phone. Nokia Energy Profiler says that the current is about 400-500mA when using HSDPA. The engineer at the service center connected a power supply with measurable current consumption, and during the usage of HSDPA, the current was at least 800mA, with almost 1000mA peaks. He said that these current intensities damage the battery in about a month and that he would not recommend changing the battery, but the HSDPA chip. The warranty period expired a month ago.
I am asking you guys:are these values normal? 800-1000mA during HSDPA usage for a Nokia N86? I need a serious, valid opinion from somebody who really knows mobile hardware. Thank you.

This has happened to me every now and then. First it seems as if the battery is almost full and then it's suddenly empty even without using the device much.
Sometimes the device feels warm. In those cases I just reboot it.
Obvious things to check would be that BlueTooth and WLAN are off if you don't need them.
Sometimes the switch of the kickstand has activated when I have carelessly thrown the phone on a bed for example. If you have defined it to start an application that could cause some power consumption.
I haven't tried to measure my power consumption. I guess there are two options:
- the device actually consumes a lot of power sometimes
- the battery indicator isn't always up-to-date i.e. it shows several bars when the battery is actually almost empty.
It's a shame because it's a pretty nice phone and I quite like it. Luckily it's quite a rare problem.
(But not that great if the battery dies during a bicycle trip just because I have SportsTracker running.)

ALC889 power consumption

Hello,
i'm running a little media server on clarkdale basis (MSI H55M-ED55, Intel i3-530) with sound chip ALC889.
Kernel is 2.6.32.9-1-ARCH and architecture is x86 Archlinux.
The hardware is supported nicely so far however there's one thing i'm not very happy about.
When playing music the power consumption climbs from 20 Watts (idle) to 28 Watts although the workload of the CPU is only 1%.
Enabling power_save for the chip alone saves 2 Watts when idling.
Compared to the consumption of the audio chip in Windows 7 which is 1 W at most the 8 Watts are unusually high for a sound chip. Is that a known issue or do you know if it can be resolved somehow? I've tried kernel 2.6.33 but the high sound consumption remains.
I assume it's just a kernel driver thing which i can't do anything about but I'd be glad to hear different.
Regards,
demian
Last edited by demian (2010-03-08 13:20:53)

You can measure your G5's power usage with this device

VI that measures power consumption(HP 4155A)

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