May 19th, 2012 by admin
Apple A1185 Battery and Apple A1189 Battery
About the most important areas computers are their Apple iBook G4 14 inch Battery. Lots of the newer laptop batteries have power volume of two and a half hours or could be a nominal amount more. However, on the internet batteries, the main that come with laptops will gradually decrease its power duration to maybe half compared to what it used to have, and overtime, may decrease further to somewhat of a quarter of the company’s advertised power duration. Everyone should understandthat the Apple iBook G4 12 inch Battery on notebook compters aren’t what you may perceive as a perpetual power station. Artificial power sources are bound to lose its capacity and ability to develop the electricity that is certainly being poured engrossed through charger.
For example, most laptops have lithium or nickel type Apple iBook G3 14 inch Battery which are great for retaining the charged power for an approximate lead-time. When laptops are taken away from the external ac, this really is, unplugged from a regular wall socket, or experiences some sort of outage, it immediately switches to such batteries for power and never having to proceed through a downtime period. Since batteries were designed to right away provide power if your need arises, it’s always subject to gradual power discharge which occurs even when the apple A1281 battery is turned off. Right here is the beginning of the process where your laptop pc battery actually starts to degrade. Precisely as it carries on wear down, you can expect to start to notice that it’s going to hold the strength which has been poured into it considerably less and fewer longer after each charge.
We all like quests… right?? Well, mine has to do with getting the most out of my battery on my aging laptop. Aging that includes the power-providing battery. I already have a head start on this with my laptop specs. It is an apple A1280 battery. It is also based on the Centrino platform, which was Intel’s first major play into laptop powersaving. Included within are an arsenal of powerful components that use minimal power (at the time).
My specific laptop was based off of the Carmel platform. It includes an Intel Pentium M 1.6GHz processor with variable speeds ranging from 600MHz to 1.6GHz, the Intel 2200BG wireless networking card, and the (unfortunately) low-powered 855 Chipset which includes Intel Extreme Graphics 2. Also included is a 12.1″ widescreen LCD Powerful Apple A1189 Battery, which I am sure uses less power than some of the larger screens out there.
I already had low power-consumption in mind when I installed Slackware (started with 10.2). I installed cpufreq-utils and cpufreqd which allowed me to adjust my processor speed depending on certain power conditions. I also purchased a larger battery (on this model the Apple A1185 Battery is in the back, so the larger one extends further out the back). The original was a 4-Cell that provides 2200mAh. I replaced that with an 8-cell that provides 4400mAh of power. When the battery was new it provided a whooping 5 hours of battery life. Sadly batteries will dwindle and the power it is capable of putting out will shorten over time.
May 18th, 2012 by admin
The replaceable compaq laptop batteries
The battery has an internal microprocessor that provides an estimate of the amount of energy in the battery as it charges and discharges. The Compaq Presario v6500 Battery needs to be recalibrated from time to time to keep the onscreen battery time and percent display accurate and to keep the battery operating at maximum?efficiency. You should perform this procedure when you first use your computer and then every few months after that. If you normally leave your Apple portable computer connected to AC?power and very rarely use it on battery power you may want to perform this process once a month. The website?www.apple.com/batteries?has more helpful information regarding batteries and offers an iCal calendar to remind you to calibrate your battery.?
COMPAQ Tablet PC TC100 Battery portable batteries for mobile phones, laptops and cameras can be checked quickly by loading with several charging pulses and observed the relationship between voltage and current. Compaq Presario m2000 Battery Ohm’s law is used to calculate the internal resistance. A comparison of measurement results allow to reference data, the health status of the battery to values estimates.
This load pulse method does not work well with larger batteries and the AC conductivity is normally applied. An alternating current (AC) is applied to the battery terminals, battery COMPAQ Tablet PC TC1000 Battery replacement is as ripple (voltage and current fluctuation) of the direct current (DC) battery superimposed, and the battery alternately invites and entlädt.dell vostro 3350 battery
The ac conductivity has been installed in many hand-held testers to test car batteries and stationary batteries. To offer simple and low-cost units, these devices charge the battery with pulses, dell vostro 3350 battery instead of sinusoidal signals. These pulses are usually not voltage controlled, and thereby the thermal battery voltage * are exceeded.COMPAQ Tablet PC TC1100 Battery, the threshold value of the thermal voltage of a lead-acid battery is 25mV per cell. Exceeding this voltage is similar to over-driving an audio amplifier. The result is increased noise and Verzerrungen
This replacement Compaq Presario v6000 Battery compatible Series allows you to replace your worn and battered old battery with a new one or just have a second battery for the device. With this battery will have autonomy in your device back to those trips or times when your battery would not be possible to work.
May 16th, 2012 by admin
High Quality HP AC Power Adapter For Your Laptop
Are you having problems with your HP AC Power Adapter for your laptop? Is it to the point that your HP Compaq laptop doesn’t turn on when you need it? Many consumers who have HP Compaq Business Notebook nx6325 AC Adapter for laptops have had the same problem. So if you are constantly on the go, simplify your life by picking up one of our replacement HP chargers for laptops.
Our high quality HP chargers for laptops have a long life and high temperature rated capacitors for your HP-Compaq Notebook, Elitebook or Pavilion. HP Compaq Business Notebook nx6330 power Adapter for laptop details for all supply HP Compaq chargers can be found below. Also, make sure to browse our online catalog for more great deals on HP Compaq Business Notebook nx6400 power supply and electronic accessories.
Just like you get a innovative HP Compaq Business Notebook NX7000 AC Adapter it is recommended on wiped away state so that you need to impose this originally. It does not matter if you can work with it after or otherwise not: nevertheless any asking should be used. You may have to boost the limit from the solar battery prior to set up HP Compaq Business Notebook nx7300 AC Adapter. In simple terms performed by charging you pays out and that we recommend some consultants completely final results. If you don’t develop electric instantly discover the correct location for it has the hard drive. It has to be cleanse, far from heat and dampness. All of the HP pavilion dv4 battery electrical battery might be cozy as soon as is run through grime charging plus discharging. When ever netbook variety is without a doubt saved it really is command disappears completely step by step. Whenever a Horsepower Pavilion notebook computer life of the battery ended up being stored longer, revitalise that once.
Got my wife one of that HP Compaq Business Notebook nx7400 power supply last year, the last couple of months it suddenly won’t turn on. The warranty was out and thought of the worst like motherboard failure etc.. Luckily it turns out the battery was drained and the power adapter was not working to charge it. After some googling it turns out this is common on HP laptop power adapters, there is a break going either on the pin side plug or the strain relief. So I was able to pinpoint the problem and just wiggled the strain relief and then taped it to position so it wont move that much. The strain relief is the rubber on the cable wire after the main power adapter box. Tape fix was not elegant to look at but it worked.
Several days ago the
HP Compaq Business Notebook nx8420 power Adapter went dead again, power supply tape fix is not working anymore, exhausted trying to wiggle the strain relief and cable wire. Using another similar power adapter and netbook charged. So back to the power adapter problem I’m sure you can get a replacement for this online from $10-$25. But here in the Philippines maybe HP service center or distributor it’s pretty much around $20-30. But if your DIY like me, It was time to open it up look in the insides and repair it.
May 12th, 2012 by admin
Buy the right power supply for your laptop
Two such exemplary HP Compaq Business Notebook 2230s AC Adapter I’ve ordered and have for several weeks to my complete satisfaction in use. One of the power supply was purchased to replace a power supply literally fumed original a Fritz. The plug contact fits wobble-free and fits into the FritzBox the polarity matches the original. Although the cable end is inserted upside down, thus pulling the plug on its own weight keeps it very secure.
Have the smooth and efficient HP Compaq Business Notebook 2510p power supply for about 2 months but not at a TFT on my QNAP TS109 NAS Network Storage Server has been running its original power supply I smoked recently. While the device has refused steadfastly to two other similar power supplies from other manufacturers work together with this one it works perfectly. Apparently provides the LEICKENetzteil a cleaner output voltage.
Super sub was used super power supply Have the HP Compaq Business Notebook 2710p power supply for an LED rope light, it had previously tried with another PSU all ziehmlich warm and the lights began to flicker after a Zeit.Genug performance and gleichmäsige current output that is what it ausmacht.Superschneller VersandTop goods as always at Amazon.Würde I buy again.
Unbelievable! War was because of my faulty HP Compaq Business Notebook 6050b power supply in a known Medienmarkt.Da me after I had been referred to a technician at least a spare power supply available for 80 € or
If you do not get a green light, try the adapter in another wall outlet in another room or verify that the first outlet works with a lamp or hairdryer.
You can also isolate the power problem to a bad HP Compaq Business Notebook 6510b power Adapter by swapping it out with a second adapter – search as one for use with the port replicator.
If the adapter LED lights, check the computer for bad connections.
Examine the system power socket to be sure it does not have any bent, missing, or pushed-in pins.
Plug the adapter connector directly into the computer, bypassing surge protectors, extension cords, etc. Be sure that the adapter connector fits tightly into the computer’s power socket.
If you have access to another computer like yours, try your HP Compaq Business Notebook 6515b AC Adapter on it or its adapter on your computer.
May 11th, 2012 by admin
The new hp laptop power supply
Got my wife one of that HP Pavilion dv6 AC Adapter last year, the last couple of months it suddenly won’t turn on. The warranty was out and thought of the worst like motherboard failure etc.. Luckily it turns out the battery was drained and the power adapter was not working to charge it. After some googling it turns out this is common on HP Pavilion dv5 AC Adapter, there is a break going either on the pin side plug or the strain relief. So I was able to pinpoint the problem and just wiggled the strain relief and then taped it to position so it wont move that much. The strain relief is the rubber on the cable wire after the main power adapter box. Tape fix was not elegant to look at but it worked.
Several days ago the
HP Compaq Business Notebook nx6320 AC Adapter went dead again, power supply tape fix is not working anymore, exhausted trying to wiggle the strain relief and cable wire. Using another similar power adapter and netbook charged. So back to the power adapter problem I’m sure you can get a replacement for this online from $10-$25. But here in the Philippines maybe HP service center or distributor it’s pretty much around $20-30. But if your DIY like me, It was time to open it up look in the insides and repair it.
Plug in the laptop with its partially-charged
HP Pavilion dv6500 power supply intact. If the battery is fully charged, unplug the power supply for a few minutes to drain some of its power.
View the desktop. The taskbar at bottom right should show a plug icon, indicating the computer is plugged in. Note whether the icon is a plug or a plug with a lightning bolt. The bolt indicates that the battery is being charged.
Wiggle the power supply cable while viewing the computer’s desktop. If the plug icon disappears intermittently, there may be a problem with the power supply.
Check all connections: the plug in the wall outlet, the HP Pavilion dv6000 power Adapter jack and most importantly, the boxy part of the power supply where the cable can be removed. This section often comes partially unplugged, unnoticed without inspection.
View the desktop taskbar again once all power connections are firmly intact. Bend the cable back and forth in various locations while watching the taskbar. If the plug icon disappears, the power supply or its cable need replacing. If the icon never disappears, the power supply is good.
Wasted some time recently looking at an HP Pavilion dv6700 AC Adapter, with Vista, that was running very slow.
No, not just normal Vista sluggishness. Really slow, as in you click the Start menu, wait a bit, and eventually it opens.
Temporarily disabled everything we could think of using msconfig (System Configuration Tool), still slow.
Checked the event log for disk errors, nothing wrong.
All very tedious as any actions took much longer than usual.
Found someone with the same problem on HP’s support forum here – but as so often with the Web, no solution is reported – though the guy does say, “can I assume that the cooling / cpu / power is defective”?
May 8th, 2012 by admin
The Apple MacBook Pro 13 inch AC Adapter Power Supply
Look, it was great while it lasted with your Apple MacBook Pro 13 inch AC Adapter Power Supply and its original power cord. They had some great times together. They supported each other. They loved each other. But now it’s over. Your power cord is gone, dead, lost, and you know what, we think that’s for the better.
Sure, you can say your old power cord knew your Apple MacBook Pro 15 inch AC Adapter Power Supply better than anyone because they came in the same box. But you’re missing how that might affect your laptop’s ego. Maybe you take it to the coffee shop, maybe it’s seen a sleeker model on the plane, but chances are, it believes it’s the only laptop there is. It sees its name on the power cord and thinks, “This is my world. No one can process this information like me!”
The Energizer XP8000 is the only rechargeable portable power pack in the world for every Net Books, MIDs and mini notebooks. It is the size of a Blackberry phone – yet delivers plenty of Apple MacBook Pro 17 inch AC Adapter Power Supply to finish your work, surf the web or watch a video! Get up to 3 extra hours of use out of your Net Book. Three power outputs allow you the flexibility to charge and power up to 3 devices simultaneously, like your iPod, Cell Phone and Net Book. The Energizer XP8000 comes with 6 cell phone tips, Apple MagSafe MacBook Air AC Adapter Power Supply is the only rechargeable portable power pack in the world for every Net Books, MIDs and mini notebooks. It is the size of a Blackberry phone – yet delivers plenty of power to finish your work, surf the web or watch a video! Get up to 3 extra hours of use out of your Net Book. Three power outputs allow you the flexibility to charge and power up to 3 devices simultaneously, like your iPod, Cell Phone and Net Book.
This means that once the short is being encountered the AC adapter, power brick, power supply shuts itself down, once it shuts itself down the green light goes out. If the ac adapter is more advance it tries to restart itself thus the blinking light. Every time ac adapter (Apple PowerBook G4 12 inch AC Adapter Power Supply) restarts the shortage happens and thus the light comes up and dims out.
Visit udtek.com . You should be able to buy accessories there, including AC power adapters. Make sure you order the proper adapter for your specific laptop model.udtek.com delivers high quality laptop batteries, Apple PowerBook G4 15 inch AC Adapter Power Supply, Laptop keyboards, Lcd chargers, DVD drivers, Scooter chargers and more. Our unique product lines of over 1000 diverse accessory power products and replacement batteries and adapters provide our customers with an extensive selection of the best quality products available.
The Apple PowerBook G4 17 inch AC Adapter Power Supply Kit for EOS Rebel T2i Digital SLR Camera lets you power the camera from any standard household power outlet%2E Recommended to power a camera for an extended period of time or when connecting to a computer%2E AC Adapter Kit for Rebel T2i The ACK%2DE8%2C AC Adapter Kit for EOS Rebel T2i Digital SLR Camera lets you power the camera from any standard household power outlet%2E Recommended to power a camera for an extended period of time or when connecting to a computer%2E AC Adapter.
May 4th, 2012 by admin
The more high quality of hp car charger
Two such exemplary power supplies I’ve ordered and have for several weeks to my complete satisfaction in use. One of the power supply was purchased to replace a HP ProBook 4425s Car Charger literally fumed original a Fritz. The plug contact fits wobble-free and fits into the FritzBox the polarity matches the original. Although the cable end is inserted upside down, thus pulling the plug on its own weight keeps it very secure.
Have the smooth and efficient HP ProBook 4430s Car Charger for about 2 months but not at a TFT on my QNAP TS109 NAS Network Storage Server has been running its original power supply I smoked recently. While the device has refused steadfastly to two other similar power supplies from other manufacturers work together with this one it works perfectly. Apparently provides the HP ProBook 4431s Car Charger a cleaner output voltage.
Super sub was used super power supply Have the power supply for an HP ProBook 4435s Car Charger rope light, it had previously tried with another PSU all ziehmlich warm and the lights began to flicker after a Zeit.Genug performance and gleichmäsige current output that is what it ausmacht.Superschneller VersandTop goods as always at Amazon.Würde I buy again.
Unbelievable! War was because of my faulty power supply in a known Medienmarkt.Da me after I had been referred to a technician at least a spare power supply available for 80 € or
Am fully satisfied by the fast and perfect delivery was put into operation the power supply immediately. Although it has no LED for checking the voltage to run it properly and do not get as hot as my old. HP ProBook 4436s Car Charger, there seems to be more efficient in energy consumption. Nice is also the storage container for the road.
TFT power supply quickly and easily damage it frei.Habe book now several months in operation in the function properly.
cheap and good the acquired power supply makes a valued Eindruck.Die connector used appear high quality and well. The connections are not unstable or rutscht.Positiv noticed that the cable leads away with a 90 ° connector from the PSU. The cable so you can more easily and less space verlegen.Weiters is the technical information on the equipment to label large and comprehensive, and whether their size and easier to decipher how the other was this really tiny geschriebenen.Fazit angeschafft.Die PSU as a replacement for an original power supply However, quality is much better than my HP ProBook 4510s Car Charger, therefore, quite clear.
I was looking for a power adapter tip to two 5-meter-long LED strip with 12 V to betreiben.Was should I say send the power supply looks just like the included bag that can be used for other things and look nice.
Power supply a power supply unit as yet none has previously been in the world. I can hardly describe what it can do. It’s so great that I let gild it.
Man can not believe there like a shot It’s one was surprised with this quality and delivery of this HP ProBook 4515 Car Charger real! Value for topp topp article what more could you want, I can only recommend everyone.
cheap and good the acquired power supply makes a valued Eindruck.Die connector used appear high quality and well. The connections are not unstable or rutscht.Positiv noticed that the cable leads away with a 90 ° connector from the PSU. The cable so you can more easily and less space verlegen.Weiters is the technical information on the equipment to label large and comprehensive, and whether their size and easier to decipher how the other was this really tiny geschriebenen.Fazit angeschafft.Die PSU as a replacement for an original power supply However, quality is much better than my initial five stars, therefore, quite clear.
I was looking for a power adapter tip to two 5-meter-long LED strip with 12 V to betreiben.Was should I say send the power supply looks just like the included bag that can be used for other things and look nice.
May 3rd, 2012 by admin
New hot HP ProBook 4331s Charger
When choosing a headset must be paid to the combo port compatibility. HP ProBook 4310 Charger is to top Battery run time energy consumption A big advantage of new hardware from Intel, the power consumption. The system for the new Atom N2600 dual-core CPU in idle mode consumes a maximum of 7 watts, and is thus well below even the older and less-equipped Asus Eee PC 1015P with Intel Atom N450 processor. Interestingly, our test unit used with the balanced power profile of Windows 7 a bit more power than the high-performance HP ProBook 4310s Charger.
Why exactly does this difference, we could not understand though. HP ProBook 4311s Charger Under load, the consumption of the system, as expected, will remain with values from 9.5 to 11.2 watts but always in the green zone. This illustrates the Cedarview-generation of Intel technical progress and enables longer battery life with the same battery capacity. In this case it is the standard 6-cell battery, the Eee PC family with 47 watt-hours, the building based on lithium-ion technology. Power consumption On / Stand 0.7 / 0.15 Watts Idle 4.8 / 7.0 / 6.8 watt load 8.5 / 11.2 Watt Key: min, med: Max: Voltcraft VC-940 battery life Battery Compaq 511 The lower power consumption in conjunction with the known 6-cell battery provides longer battery life. At idle, with disabled
Thus, the Kensington lock is now waiting on the back of the HP ProBook 4320 Charger, AC adapter Acer Ferrari 4000 card reader is moved from right to left. The other interfaces (input power, RJ-45 Gigabit LAN, headphone, microphone) are almost identical. Two audio jacks for the way we keep pretty lean on such a costly device should expect something more. Who wants to connect a surround sound system, the detour will be via HDMI. On the distribution of the interfaces can argue, of course. Due to the complex cooling design with the fans mounted to the rear Asus remained in effect, no choice, battery, AC adapter Acer Ferrari 4001
taking as the side surfaces in fitting. HP ProBook 4320s Charger, AC Adapter Acer Ferrari 4001 Advantage: All connections are always handy. Drawback: Right, which hang many cable to the notebook will be angry at times while gambling over the limited range of motion (on mouse). The wireless radio module from Qualcomm is called Atheros AR9485WB-EC. The PCIe card (2.4 GHz) dominates the usual Wi-Fi standards (802.11 b / g / n, etc.) and transfers data at up to 150 Mbit / s Bluetooth 3.0 is also on board. In addition to the maintenance interface has been enhanced maintenance capabilities. HP ProBook 4330s Charger.
Although one graphics card and processor and HP ProBook 4331s Charger, AC Adapter Dell Inspiron 1200 still can not be removed without a complete disassembly of the case, we are pleased by the fact that the user may ran (at least superficially) to the fan housing. In the old models, a dust was still taboo. The hard drives and a part of the working memory are also accessible via the two hinged panels (each secured with a screw). Battery, AC Adapter Dell Inspiron 2200
May 2nd, 2012 by admin
The high quality of compaq armada car charger
Most mid- to high-power supplies use fans to help dissipate the internal heat that is generated as a result of imperfect Compaq Armada 110 Car Charger to DC conversion efficiencies. Since fans are electromechanical devices, they reduce the system’s MTBF and add to the required maintenance expenses.
Attached is a photo of a power supply that operated for many years at a postal depot where mail is handled and sorted automatically. As can be seen (after the fan was removed) paper fragments and airborne dust contaminants were pulled into the Compaq Armada 110s Car Charger by the fan and eventually caused a blown fuse.
As might be expected, the proper maintenance program for any fan-cooled Compaq Armada E300 Car Charger calls for the periodic inspections of the supply, with the fan removed, and the replacement of the fan with a new one.
By producing 13.8 Volts at around 20 Amps, the Compaq Armada E500 Car Charger unit is suitable for ham radio transceivers that are often receiving currents. A separate 15 mA to 20 A current limiting output has been added for lower currents. To achieve the desired voltage of 13.8V, the power transformer should be proficient enough to provide 17.5 V to 20 V at 25 A. Low power dissipation is the result of low voltage supply. Capacitor C1 smoothens the current form the diode bridge rectifier. To do this, the value of the capacitor should not be less than 40 uF or 50 uF. This is very true to the fact that 20 uF should be provided per ampere. It is not necessary to position a higher value capacitor, instead a parallel combination of smaller capacitors can be used to achieve the desired value.
The foundation of the circuit design is focused around the 7812 IC 12V regulator. The desired value of 13.8V can be calculated using the two attached resistors R5 and R6 with the formula: U=12(1+R5/R6). For the 7812 regulator to function properly, a low current of 15 mA should be maintained in the circuit. In the event that the current exceeds 15 mA, R4 will receive the voltage drop from the IC. This will cause Q3 2N5683 to open, which manages the high output current. As a PNP transistor, the Compaq Armada E700 Car Charger for current amplification is at least 20.
Why? Simple – the switch usually interrupts the output voltage of the transformer, not the input voltage. This means that power is ALWAYS running through the transformer coil in the machine (nothing but irons, hot plates, and some lights run at a full 120v, just about everything else needs to convert the voltage down. If it doesn’t use a Compaq Armada E500s Car Charger, the adapter is just hidden inside the machine as a permanent part)
Why would someone do this? Easy. Ease of use. Remotes need power to receive a signal, so any device with a remote is ALWAYS on. Tv tubes would be as slow to start today as they were in the 50ies if they weren’t kept in a “warm” state.
Heck, even your doorbell is hooked to a 12volt transformer which is ALWAYS running (it wouldn’t be too safe to run 120volts to something that people mash on that could get wet).
April 27th, 2012 by admin
The other apple laptop batteries
If any of these risks or uncertainties become a reality, or the ultimate proof assume that error, Compaq may be inconsistent with their statements in the forecast, Compaq does not assume any responsibility for such cases, and has no intention to file forecast for further updates. Additional information about the merger and access to. apple a1079 battery is interested in joint licensing and statements, and other merger-related documents filed with the SEC. Joint licensing and statements will be sent to the shareholders of Hewlett-Packard and Compaq. Because it contains timely read on HP and Compaq combined HP and Compaq Investors and security holders should be in the joint licensing instructions and statements.
Which is the easiest, most effective and most economical way is to upgrade the memory. Although the expansion of the notebook computer space is small, but most manufacturers set aside a memory expansion slot, provides us with convenience. In fact, the notebook upgrade memory operation is not complicated, just a little understanding, can be resolved, then do not have to hold the machine to the vendor. Below, I will detail what steps notebook computer memory upgrade for your reference.First of all, to give you a laptop memory buy. In addition to to buy a high-performance, compatibility, thoughtful after-sales service, a trusted brand products.
The winter is not outdoor use notebook second reason is the low temperature will damage the apple macbook pro 13 inch battery.
The vast majority of notebook computers use lithium-ion battery,Like apple a1148 battery ,apple ibook g4 12 inch battery,APPLE PowerBook G4 15 inch Aluminum Battery.
the benefits of this battery weight, large capacity, but also brings very cold this shortcoming. An ordinary civil lithium batteries in sub-zero capacity reduced by 20 percent to minus ten degrees, the capacity may be only about half. Northern friends all know that winter, telephone, no electricity in her bosom warms can be used for a period of time, this is because the battery temperature is too low power does not put out. So one or two may not have much impact on battery life, But if your long-term use might be the apple powerbook g4 15 inch battery causing permanent damage.Winter is not outdoor use notebook third reason is the kind of feeling a little unhappy also likely to cause misunderstanding.