Q:Is there a kind of power supply for the computer with anti-power ah? Who knows, can you talk about it? Thank you.

trunking in the distribution cabinet, instrument cabinet The use of multi-line slot is used to track the bridge is used to take the cable

Q:How to pick up the rear view camera

The camera line through the license plate gap into the car, and the reversing lamp power and video extension cable connection This type of installation of the reverse camera is the current One of the more popular, the more subtle appearance, the installation is more relaxed The other is the installation of drilling, embedded inside the bumper, the benefits of this method is not in the car after the metal parts drillingBecause the bumper is plastic And the camera line is also relatively easyThird step will be the camera's power cord and the car after the reversing lamp power cord connection Then the camera's video cable and video extension cable connected to the other end of the video extension Car display AV input connected to the final recovery of the battery-powered, start the car, put on the reverse gear, you can see the car display on the reversing image Note: 1 can not rely entirely on the reverse rear view system, and only Can be regarded as a reversing auxiliary tool 2 Car display must be properly connected, if the monitor does not provide AV input interface, you must find the appropriate video cable or install the video switching device so that the rear view of the normal display Do not easily connect the car power supply directly to the car battery power, so as to avoid power instability

Q:Consult the teacher. Uninterruptible power supply UPS inside the battery for a little bigger. The original 12v7AH. Now 12v17AH can you?

Component video is a television interface standard, with the brightness Y signal, color saturation Pb, tone Pr three signals to describe the high-definition video screen, rather than using the traditional three primary colors (RGB, red, green and blue) to describe the video screen, the advantage is The picture is more clear, more realistic colors. Component video jack and video cable plugs are red, green and blue, plug the plug to make the same color and jack the same color. But because the interface does not have the function of transmitting audio signals, it is necessary to reprovision audio lines, usually using composite audio and video lines (red, white and white, also known as AV line) in the red and white lines to send stereo left and right channel Audio. TV on the marked "video 1" jack, is the composite audio and video interface in the yellow video jack. "Component video" and "video" difference is that the former transmission of high-definition video screen, resolution up to 1920 * . which can only transmit standard definition video, a resolution of 720 * 576. Hisense TV connected to the set-top box after the screen is not clear, there are many reasons for the need for specific information.

Q:After connecting the printer, the computer always appears unrecognized USB device, what is the reason? The printer is Lenovo M9314E multi-function one laser printer. More

Into the line: 4 square socket line: 2.5 square lamp line: 1.5 square does not matter brand, buy the national standard on the line. (Line with GB, factory standard, non-standard)

Q:Gold cup car reversing lamp voltage is how much

In accordance with the hardcover room slightly calculated: per square meter area / 2 meters, .000 square meters of booking .000 tons of PVC pipe. Water room will not be so much.

Q:There is a 12V electrical appliances. How can I receive the computer power supply

USB cable more than 2 meters, it is not easy to use! It is best not to change! If the card signal is not very good ~ can try to make their own an amplifier! Go looking online!

Q:UL certified switching power supply can not increase the lights, please tell me more

insulation damage caused by short circuit failure. cable overload operation for a long time. oil-immersed cable due to height difference drip, oil spill. intermediate connector box insulation breakdown. cable head burning. external fire and heat caused by cable fire.

Q:How can the fastest church dog shake hands! And some basic action ah?

The "plugging" of the steel waterproof casing is included in the "casing installation" work, so if the waterproof casing is embedded in the total package unit, the casing should be blocked by the total package unit. The total package unit should not be the corresponding closure of the visa costs, unless there is a special case: the steel plate directly block the need for casing, then you can visa.

Q:If the computer power supply is not enough, you can use two power supply

The number of patch panels in the data master is primarily based on the number of overall network points or the number of network points on the floor (and the floor, depending on how the system is designed). Different buildings, different system design, the main equipment between the patch panels will be different. For example, if there is only four floors in a building, the main equipment is set on the first floor and the network points of all floors enter the equipment. The number of patch panels is equal to the number of all network point / patch panel ports (24 Mouth, . etc.), and add a margin; if a building has 9 layers, the main equipment set in the 4 layer, then in order to avoid the cable long, , And there are switching equipment. Then the patch panel between the master equipment is equal to the number of 4-point network points / patch panel ports (. . etc.). Similar to the voice, the difference is that the majority of the voice into the line using the number of cables in the device after jumper jumper into the copper patch panel, and then through the Category 5 or 6 line to the front panel. The type of patch panel is mainly to see the equipment and the needs of the owners, such as the data can be used . . . etc., the voice can be used 110 patch panels, 10 pairs, 50 pairs, 100 pairs can The The type of jumper between the network is certainly the network cable to jump, and some of the voice between the duckbill into RJ45 or RJ. according to the need to match it. In short, your patch panel must be able to accommodate all your current network point or voice point of the configuration needs, and leave a margin can be. Hope to give you a little help.

Q:The host computer is normal, the mouse and the keyboard display lights are on, the display of the display is also bright, is the black screen (the display is good), and occasionally with the boot, but most are boot screen black screen more

0.15 m. See the "Urban Engineering Pipeline Integrated Planning Practice" GB-98