For Android, users will have some distaste for it. Pre-installed software is one of them. People often say "I really hate those unwanted software that is preloaded on my phone!" or "those vendors Why do you think about pre-installing these spicy chicken software on my mobile phone?" What is junk software in the end? What impact will it have on the handset? What's more, these spicy chicken software will shorten the battery life? Next we will verify it.
This article tests the impact of pre-installed software on the power consumption of foreign media Android Authority.
Translator's Note: The problem of abuse of foreign Android applications is much lighter than domestic applications. If foreign applications are also paralyzed, domestic applications are estimated to be even more unsightly.
Define spam softwareThe first thing we need to do is define what exactly is junk software. Every Android phone has a different “tier†of apps. The bottom line is the system default software such as clocks, calculators, dialing software, and text messages, etc. Every mobile phone will have this software, but sometimes manufacturers will also customize such software. The next “level†is Google App (which is a domestic user’s opinion). These applications use Google services such as Play Store, YouTube, Google Maps, and Gmail.
If an Android phone has only two "tiered" apps, it proves that it does not have any pre-installed software. The next “tier†is the customized software for mobile phone manufacturers, which is called “pre-installed softwareâ€. Usually, this kind of pre-installed software is not downloaded in Google Play Store, like Samsung’s S-Health or S-Voice and so on, these softwares are specially used with the manufacturer's mobile phone. If a mobile phone manufacturer preempts a mobile phone with a poor experience and no practical use, it will be called spam software.
(Unused garbage software in mobile phones)
There is also a "level" of the partner's App. If a software company cooperates with a mobile phone manufacturer, the software company's own app will be pre-installed on the manufacturer's mobile phone. It's very simple, just like the mobile phone you buy may be pre-installed with Jingdong Mall, QQ Browser, or WPS Office Software, but it's difficult to define whether they are junk software, because some people may need them. , I like to use QQ browser to read articles about love, so I will not exclude them, but I rarely use office software on mobile phones, so when WPS appears in my mobile phone, I will compare Disgusted.
The last "tier" is the operator's software, like the software of the three major carriers, which are usually pre-installed on their customized mobile phones. For example, you bought a Samsung Galaxy S7 edge at China Mobile. There will be a China Mobile logo on the phone, open the phone, there are many of their home App, these apps may only be used for a thousand years.
Application crashes, stabling - any software will crash or interface freezes. There is no doubt that pre-installed apps increase these odds. When you download a software on the Play Store and you find that it often crashes, you can choose to uninstall them and no longer use them, but many preinstalled software, you do not want to use, you can not uninstall.
Advertising and spam - often pre-installed software will have a lot of advertising, or often pop-up notifications to remind you to buy the "full trial version" or "Pro version", and sometimes even these spam will fill your entire notification center space .
Backdoors and Privacy Gathering - I believe you should have heard that CarrierIQ will secretly collect your private information. Although mobile phone manufacturers and Google claim that they will protect your privacy from disclosure, it is still difficult to guarantee that Android is an open source system. at this point.
Reduced battery life —A very hot programming application can shorten the life of your phone to a certain extent. Whether this application is from Google, a mobile phone manufacturer or an operator, if the developer’s level is very low, their apps will affect the battery life. Life. On the other hand, if an App is programmed well enough, there will be no problem even if it is run in the background for a long time.
In this regard, there are two questions, "Can preinstalled software have an impact on battery life?" and "Will preinstalled software affect the battery life?" The answer to the first question is very obvious. Of course, as I mentioned above, a software that is very poorly programmed will absolutely affect the endurance level, and our focus is actually “will it be? "Not "can't".
In order to verify this problem, I tested it with a Verizon (USA carrier) version of the Galaxy S7. There are three types of pre-installed software in Verizon's S7, including mobile phone manufacturers (Samsung Gear, S-Health, and S- Voice), Amazon Partners (Kindle and Amazon Music), and Operators (Voice Mail, go90, Verizon Cloud, and VZ Protect).
The battery consumption monitoring software on the Samsung Galaxy S7 can be found by opening Settings> Applications> Application Management. This statistics software can tell you how much power each mobile phone consumes after the last full charge. The largest power consumption is the screen and the Android OS itself. Let's see if the pre-installed software will consume a lot of power.
For better testing, I set up every app to call any system resources and permissions so that they can run in the background. After 24 hours of use, my mobile phone's battery power has fallen below 25%. Then I went to the application management to check how much power each of the pre-installed software consumed. As a result, each pre-installed app consumes electricity. . . 0%. what! ? 0%? How can it be? The Galaxy S7 has a 3,000-mAh battery. Calculating it, on average, every 1% of the battery should have a power of 30 mA. Even if the statistical software calculates that the consumption is 0%, it does not mean that it is really a little electricity. No consumption, it may consume 1-29 mA, and we can't be sure. Assume that under the worst-case scenario, each of the 18 pre-installed software consumes less than 1% of the power. Together, they can consume 500 milliamps of power (on average, each pre-installed software consumes 28 milliamps. ) Of course this is just a hypothetical situation.
I suspect that only four or five of the pre-installed software may run in the background during the test. Together, they may consume about 5% of the power. So, poorly programmed software will shorten your life? Of course, well-programmed pre-installed software will not affect your life. This means that software developed by big companies like Samsung, Amazon, or Microsoft does not have a bad influence on the phone, but if you have some apps on your phone that you haven’t heard before, you may need to pay attention. , Small companies often have more Bug apps.
If you don't want any pre-installed software on your phone, you can choose to uninstall them. If you come across a pre-installed software that cannot be uninstalled, there are some ways to do this. In the TouchWiz secondary menu, press and hold the app icon and drag Go to "Turn off/Disable" at the top of the screen to forcibly shut down and freeze the application. Other Android phones can open Settings> Apps> App Management, click apps you don’t like, and then click “Disableâ€.
(disable preinstalled software you don't like)
Pre-installed software will not affect the life? The answer is yes, but it's even more dependent on what kind of apps your phone comes with. If some of the pre-installed software on your mobile phone will shorten the life, please let us know in the message area.
Graphic translation from Android Authority
Product Description
SPD Surge Protective Device,Lightning Surge Protector
Surge Protection Device (SPD)
It is a device used to limiting instant surge voltage and discharge surge current, it at least including a non-linear component.
Surge protective Device Model Selection
With the impact of international information flow, the rapid development of microelectronic science and technology, communication, computer and automatic control technology, make the building start to go for high quality, high functional area, formed a new building style-intelligent building. As inside the intelligent building there are lot of information system, <<Building lightning protection design norm>> GB50057-94(2002 vision)(hereafter brief as <<lightning protection norm>>) put forward the relative requirement to install the surge protective device, to ensure the information system safely and stable running.
SPD essentially is a equipotential connection material, its model selection is according to the different lightning protection area, different lightning electromagnetic pulse critical and different equipotential connection position, decide which kind of SPD used in the area, to achieve the equipotential connection with the common earth electrode. Our statement will based on SPD's maximum discharge current Imax, continuous operating voltage Uc, protection voltage Up, alarm mode etc.
As per << Lightning Protection Norm>> item 6.4.4 stipulation "SPD must can withstand the expected lightning current flow and should confirm to the additional two requirements: the maximum clamp voltage during surge across, capable to extinguish the power frequency follow-on current after lightning current across." That is the value of SPD's max. clamp voltage add its induction voltage of two ends should be same with the system's basic insulation level and the equipment allowed max. surge voltage.
SPD for Power Supply System Series Selection Guide
The installation of SPD at each lightning protection zone, according to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category, its insulation withstand impulse voltage level can determine the selection of SPD. According to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category as signal level, loading level, distribution and control level, power supply level. Its insulation withstand impulse voltage level are:1500V,2500V,4000V,6000V. As per to the protected equipment installation position different and the different lightning current of different lightning protection zone, to determine the installation position of SPD for power supply and the break-over capacity.
The installation distance between each level SPD should not more than 10m, the distance between SPD and protected equipment should as short as possible, not more than 10m. If due to limitation of installation position, can't guarantee the installation distance, then need to install decoupling component between each level SPD, make the after class SPD can be protected by the prior class SPD. In the low voltage power supply system, connecting an inductor can achieve the decoupling purpose.
SPD for power supply system specification selection principle
Max. continuous operating voltage: bigger than protected equipment, the system's max. continuous operating voltage.
TT System: Uc≥1.55Uo (Uo is low voltage system to null line voltage)
TN System: Uc≥1.15Uo
IT System: Uc≥1.15Uo(Uo is low voltage system to line voltage)
Voltage Protection Level: less than the insulation withstand impulse voltage of protected equipment
Rated discharge current: determined as per to the lightning situation of the position installed and lightning protection zone.
SP1 Series
Normal Working Conditions
-Altitude not exceed 2000m
-Ambient air temperature:
Normal range: -5ºC~+40ºC
Extend range: -40ºC~+80ºC
-Relative Humidity: 30% - 90% under indoor temperature condition
- At the place without obviously shaking and shock vibration
- Non-explosion danger medium, non-corrosion gas and dust ( including conductive dust)
Classification
-As per Nominal Discharge Current:
5,10,20,30,40,60KA(8/20µs)
- As per Maximum continuous operating voltage:
275V,320V,385V,420V,440V,460V
- As per to poles
1P,1P+N,2P,3P,3P+N,4P
- As per auxiliary functions:
a. With remote signal output ( remote alarm function)
b. Without remote signal output
Selection Principle
- The continuous applied voltage on the two terminals of SPD should not more than the maximum continuous operating voltage Uc value;
- The voltage protection level Up of SPD should less than the maximum impulse withstand voltage of the protected equipment;
- As per to the different earthing system and protection mode to select the specification accordingly;
Product Features
1, built-in over-current overheating, temperature control circuit technology.
2, the module design, easy installation, online replacement.
3, low leakage current, fast response time, low residual voltage.
4, alarm indication device, green (normal) v red (fault).
| Model/Technical Parameters | WR-B60 | WR-B80 | WR-B100 | WR-B120 | WR-B150 |
| Rated Operating Voltage Un (V ~) | 220V 380V | 220V 380V | 220V 380V | 220V 380V | 220V 380V |
| Maximum Continuous Operating Voltage Uc (V ~) kV | 385V 420V | 385V 420V | 385V 420V | 385V 420V | 385V 420V |
| Voltage Protection Level Up (V ~) kV | ≤1.8≤2.2 | ≤2.4≤2.5 | ≤2.5≤3.2 | ≤3.4≤3.7 | ≤4.0≤4.5 |
|
Maximum Discharge Current Imax(8/μ20μs)kA |
60 | 80 | 100 | 120 | 150 |
|
Nominal Discharge Current In(8/μ20μs)kA |
30 | 40 | 60 | 80 | 100 |
| Response Time | <25 | <100 | |||
| L/N(mm²)The Cross Section Of L/N Line | 16,25 | 16,25 | 16,25 | 16,25 | 25,35 |
| PE (mm²)The Cross Section Of PE Line | 16,25 | 25,35 | 25,35 | 25,35 | 35 |
| Fuse or Switch (A) | 63A | 63A | 63A,100A | 63A,100A | 63A,125A |
| The Line Section of Communication and Alarm (mm²) | ≥ 1.5 | ||||
|
Operating Environment-C |
(-40ºC~-+85ºC) | ||||
| Relative humidity 25 ºC | ≤95% | ||||
| installation | Standard Rail35mm | ||||
| Material of Outer Covering | Fiber Glass Reinforced Plastic | ||||
Surge Protector SPD,Surge Protection Device SPD,SPD
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjmannualmotorstarter.com