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In the past two days, we have selected a 4.3-inch LCD screen for the fs_s5pc100 development platform of our R D center. Finally, the a043fw02 V0 of Auo is set in many screens. I thought that the units that sold the screen could provide reference backlight images, but most of the results were not. A customized backlight can be provided, but it is expensive. Select your own power
the power supply short circuit (especially the line scanning circuit short-circuit), the +80v output of the line scanning circuit is disconnected, from the power output end of a 40w/220v bulb, the power-on, monitor power
Many users in the use of computers, have encountered the display jitter and black screen situation. In fact, this situation may be due to the power supply voltage instability caused by the monitor. Power transformers and other coils if damp, also easy to produce leakage. If the use of the environment is too hum
power supply is insufficient, one has the air-conditioner to start the computer to restart. This phenomenon has been bothering me for some time. Their ups can not be used normally: battery power when the CRT monitor was opened by others caused degaussing coil suddenly open recoil high-voltage damage inverter mos tube,
prevent short-circuit (especially the Line Scanning Circuit) of the power supply load, + 80 V output end of the line scanning circuit is disconnected, and a 40 W/V light bulb is connected from the power supply output end to start up, the power indicator of the
What is an LED? The LEDs are the initials of the light-emitting diode Lightemittingdiode. LED applications can be divided into two categories: one is led single tube applications, including backlight led, infra-red LED, and so on, the other is led display, at present, China in the production of LED basic materials and the international still have a certain gap, but in terms of LED display, China's design and production technology is basically synchronized with the international level. The
In the daily enjoyment of the LCD that unusual high-grade display effect at the same time, do not forget to maintain this extremely important link. Only if the LCD is well maintained, it can serve the customers for a long time without fault. It should be clear that the expensive LCD, as long as the following some simple maintenance steps, you can serve a long tim
Seagate Hard Drive, and then upgraded with a 128M memory, configured with a built-in 56KMODEM and TV card, The fault appeared. Specific performance for the system started shortly after the crash, the monitor black screen no signal, the optical drive light long bright. Whether into the WIN98 system, with the system disk boot, or into the CMOS system will appear this fault, once the crash either reset key or power
, 128mbddr266 memory, 40GB of the Seagate hard disk, and later upgraded to install a 128M of memory, configured with a built-in 56KMODEM and TV card, The fault is there. Specific performance for the system startup soon after the crash, the monitor black screen no signal, optical drive light long light. No matter into the WIN98 system, with the system disk boot, or into the CMOS system will appear this fault, once the crash whether the reset key or the
The first taboo: moisture invasion Water can be said to be the first natural enemy of liquid crystal. The destructive power of water to the LCD screen is astonishing. So you should put the LCD in a more dry environment to use, do not let moisture into the LCD inside. For some users with a more humid working environmen
different from CRT monitor. It is a direct pixel one by one corresponding display mode. Working at the best resolution of the LCD display card output analog display signal through processing, converted to a specific address information (the pixel on the screen absolute address) of the display signal, and then into the LCD plate, directly to the display signal to
point of the motherboard voltage, to pay attention to the voltage (4.8V), reset voltage (high or low level, according to different models), MCU voltage. If a power supply short circuit, to carefully find short circuit position, there will be PCB board copper foil may be short circuit (2) Find out whether the contact between the MCU and the motherboard is good (3) Check whether the motherboard chip and MC
device (PD, Power Device). The PSE device is the device that supplies the Ethernet client device and is also the manager of the entire Poe Ethernet power supply process. While PD devices are powered by the PSE load, the client devices of the Poe system, such as IP telephony, network security cameras, AP and Handheld computers (PDAs) or mobile phone chargers, and
I haven't written a computer repair experience for a long time, think about it, big things, small things are quick to make me not like people, hehe! Well, today in the shop finally idle down to write a monitor repair feeling, just repaired a benqfp71e LCD screen boot black, the failure of BenQ machine has high pressure board part of the common problem, This should be recognized, the fault is mostly turned o
monitor output voltage and current exceed rated value, IC through feedback circuit feedback back to adjust the internal control circuit, control Q1 and Q2 duty ratio, always keep output constant voltage and current supply CPU. Maintenance process The first manifestation of the failure is that the CPU core voltage (VCore) is not normal. And there are two things: The first is: CPU core voltage High or Low
Power Supply Design of Radar Video Signal Simulator Based on TPS54310 [Date: 2008-10-13] Source: foreign electronic components by Liu Donghai, Ren Yongfeng, Li shengkun [Font:Large Medium Small] 1 IntroductionThe radar video signal simulator is an important device for debugging the radar signal processor. It has the analog environment and target video echo signal functions and is used
should be obvious signals of manual and automatic switch and switch; ⑤ There should be a "jump" locking device to prevent multiple switches of the circuit breaker; 6. You must be able to monitor the integrity of the power supply and the next operation circuit. 16. What is the electrical "ground? A: When an electrical device is in operation, if a short-circuit gr
supply. When the motor is braked, the kinetic energy of the regenerative brake is absorbed by the main power supply. The power flow flows backward at this time, and the energy management system and the electronic controller control the regenerative brake and its energy recovery, the energy management system and the ch
1. Plug the video card into the slot of the video card and fix the video screw. Locate the video card power connector at the top end of the video card (this video card has a power interface of two 8 holes). 2. Find the inside of the chassis in advance to stay out of the video card power plug (outside the box inside, that is standby), the case inside the e
the adapter,The adapter with an output current of 1.5a can meet the needs of two mobile hard disks simultaneouslyIf you have more USB devicesThe current of all devices is added (the standard device has a nominal current value on the nameplate) and multiplied by 1.2.To ensure a certain margin of power supply, and then select the hub adapter based on the total data. Step 2: view the voltage If an active
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