nb power

The working principle of the switch power supply in this paper is the analysis of the principle of the switch power supply engineers of Electronic enthusiasts. Based on the analysis of a wide range of switch power supply cases, this paper introduces the single-positive excited switch power supply and Self-excited switc

3C Certification Of all the power supply, only one power supply has not passed the 3C certification, of course, you can not buy in the market, because the power supply in our market, must pass the 3C certification, the power is not certified the application, waiting for certification a hand, it could be put on the mar

When you solve a user's PC fault, do not forget to use a multimeter to test the power supply. Learn some simple and easy-to-use skills to help you eliminate the possibility of power failure. It may not seem obvious, but more than 1/4 of PC problems are related to power problems to some extent. You may think that if there is a problem with the

Power Management (or energy consumption management) is a research topic for chip design, manufacturing process, system design, and software, we strive to minimize static and dynamic power consumption in each phase. The traditional voltage control and management standby modes are still being adopted by most electronic devices and will continue. However, with smart phones, navigation devices, and wireless sen

Have patience to read it (or the algorithm is important) User Initial weight: Enable = 0; If a user has the first power Select, then the user right value: Enable = enable + 1; If a user has a second power insert, then the user right value: Enable = enable + 2; If a user has a third power update, then the user right value: Enable = enable + 4; If a user has the fo

If you have patience, you can read (or the algorithm is important) the initial user weight: Enable0. if a user has the first Select power, the user weight is EnableEnable + 1; if a user has the second power Insert, the user's weight is: EnableEnable + 2; if a user has the third power Update, the user's weight is: EnableEnable + 4; patience (or algorithm importanc

Advantages and disadvantages of data center Power Supply System Solutions As a protection for the normal operation of the data center, the design and selection of UPS have core significance for the construction of the power supply system of the data center. In the current use of the data center, direct parallel and 2N power supply solutions are the most common.

I. Circuit DiagramLet's take a look at the figure. This figure is a circuit commonly used by lm4890 in MPN.2. Introduction to lm489201. General descriptionLm4890 is an audio power amplifier designed primarily for applications in mobile phones and other portable communication devices. In a 5 v dc power supply, it can output 1 W continuous average power to 8 Ω BTL

Fault model: Gold Great Wall c-i5271-type display; Fault reason: lightning; Failure phenomenon: no display. Users reflect that the machine was struck by lightning, issued a "bang" a sound. Analysis and overhaul: Open the chassis found that the power fuse (f901/3.15a) has been burned, and the internal blackening, indicating that the power supply has a serious short-circuit failure. The

Detailed description of data center Power Supply Mode Electricity for data center equipment, just like gasoline for cars, cars cannot start without oil, and data centers cannot run without electricity, therefore, electricity is the most important thing for Data Center devices. All those who have learned the power base know that electricity is mainly divided into ac, DC and high voltage DC. AC

usually, the cause of the surge on the hub port is caused by the weak USB power supply. Why is there a surge on the hub port? How can this phenomenon be solved? The steps are as follows: One, the power surges on the hub. This is due to the lack of USB power supply, but what is the best way to solve it? Turn on System Properties-hardware-Device manag

Because of the current jquery thunderclap piercing, I believe that it is not necessary to introduce what is jquery, the company's code is widely used in jquery, but I look at some of the children's code to find a problem, the children are using only the surface of jquery, only using the ID selector and attr method, There are a few animations, if only so, compared to the cost of it, in fact, rather than the use of the following introduction of several jquery common methods to enable the

Power Cat, also known as the Power Network Bridge, its biggest bright spot is that it can transmit the network signal through the wire, which effectively solves the problem that the wireless signal of the ordinary wireless router has weak ability to pass through the wall. But a lot of friends for the use of router settings to understand, but for the recent years began to popular

Power is the heart of the computer, the power of bad quality will not only damage the motherboard, hard drives and other components, but also shorten the normal life of the computer. Of course, a good quality of the price of the power supply will not be cheap, so some businesses tend to use cheap power to deceive consu

If the CPU is a strong heart of the computer, then the power is its energy center. The power supply is not valued by the users in PC computer, but it is the product that is often neglected, but it provides stable and continuous current for all computer equipments, such as CPU, memory, optical drive and so on. If there is a problem with the power supply, can not p

The typical Ldo power supply itself consumes (vin-vout) *iout, so the larger the two, the greater the power consumption and the lower the efficiency.LDO, switching power supply DC's advantages and disadvantages (2008-11-06-22:40:23) Reprint Tags: power supply talk low dropout linear regulator, so the name thought, for

Research on Low Power strategy of Embedded Linux Abstract: Power consumption is a very important performance indicator for embedded devices. After the hardware design and selection, the power consumption level depends greatly on the software design. In view of the increasing application of lioux in embedded devices, several software programming strategies are pr

If the CPU is a strong heart of the computer, then the power is its energy center. Power in the PC computer is not the user's attention, but it is this often overlooked product, but for the CPU, memory, optical drive and other computer equipment to provide a stable, continuous current. If the power supply is out of the question, it can not provide energy to other

Patience (or algorithm importance)Initial User Weight: Enable = 0;If a user has the first right to Select, the user's right value is: Enable = Enable + 1;If a user has the second right to Insert, the user's right value is: Enable = Enable + 2;If a user has the third right to Update, the user's right value is: Enable = Enable + 4;If a user has the fourth right to Delete, the user's right value is: Enable = Enable + 8;Why are the numbers of + 1, + 2, + 4, and + 8 in sequence, instead of + 1, + 2,

I. Glossary: 1. Three-phase alternating current (AC): An electric power system consisting of three AC circuits with the same frequency, equal potential amplitude, and Mutual Difference of 120 °. 2. One-time device: the device directly related to power generation and distribution is called one-time device. Including various high voltage circuit breakers, isolating switches, busbars,