vidicon tube

minutes to show up.This is caused by the leakage of the image tube seat and the tube seat must be replaced. The rear cover can be opened to see a small circuit board at the end of the image tube, and the tube seat is welded on the circuit board.On Carefully unplug the circuit board, then weld the

video card driver first, it is best to update to the latest version to try. Not really, consider whether there is a problem with the video card. 　4, monitor problems If the monitor itself has a problem, it can also cause the computer monitor to splash screen. According to the above 4 kinds of conditions, conditional friends may wish to use the substitution method test, can generally find the problem. The following are some computer maintenance staff summed up some of the reasons and solutio

the time of the disk becomes longer Optical drive failed to read disk hardware fault is mainly concentrated in the laser head components, and can be divided into two kinds of situations: one is used too long to cause the laser tube aging; the other is the photoelectric tube surface too dirty or laser tube lens too dirty and displacement deformation. So when the

Common fault One: the computer just opened the screen of the monitor jitter very badly, sometimes even the icon and text can not see clearly, but after one or two minutes will return to normal. This phenomenon occurs more in humid weather, is the cause of damp inside the monitor. To completely solve this problem, you can use the moisture-proof sand in food packaging with cotton thread string, and then open the rear cover of the monitor, the moisture-proof sand hanging in the image of the

normal. This phenomenon occurs more in humid weather, is the cause of damp inside the monitor. To completely solve this problem, you can use the moisture-proof sand in food packaging with cotton thread string, and then open the rear cover of the monitor, the moisture-proof sand hanging in the image of the tube neck near the tube seat. In this way, even in humid weather, there will be no more "problems".

First, the principle of DC circuit (1) Buck type converter Brief analysis: During the opening of the switching tube s, the current is charged to the capacitance C through the switch tube and inductance. When the switching tube s is off, the filter capacitance C is charged to r, because the inductor current cannot be mutated, through the RC circuit, D discharge

subkeys (except the root item, which has no parent). Tiered data exists in many database based applications, including categories in forums and mailing lists, business organization charts, classification of content management systems, and product classifications. We intend to use the following product categories for a fictitious electronic store: These classifications are similar to the hierarchy of classifications in some of the examples mentioned above. In this paper, we will start from the

reaction speed is slow and the service life will be affected after a long period of use. Mos adds some simple method of resistance and capacitance delay lines, which is cost-effective and suitable for low-end applications. The best method is to use a hot swapping chip. Generally, the chip contains a drive MOS design and current detection resistor. In addition to basic hot swapping, it can also provide special functions, such as controlling the current rising rate, power supply management, and s

damage, can not be repaired, Another point is that your BIOS file must be consistent with your motherboard model, including the manufacturer and model, otherwise the refresh will often cause the phenomenon of not showing. Motherboard point does not light maintenance example Example 1. A pci1600-f motherboard is not lit. First of all, visual inspection, found that the Power control IC U24 (AIC1569) surface has burned traces, welding U24, check the peripheral circuit did not see abnormal. The b

board is pasted, you need to use a knife or a small planer to flatten it. At the end of the ship, you need to use a wooden pin and a knife to sharpen it according to the hull line. In order to improve the hull strength and enhance water tightness. A thin cloth or gauze can be pasted on the outside of the shell board with fast-drying glue, transparent cloth oil or varnish. After drying, it can be coated with putty, polished, painted and beautified. It is made of metallic materials in a similar w

The difference between TVs diodes and Zener diodesWhen the TVs tube exceeds its withstand voltage, it will momentarily short-circuit the reaction speed at the NS level,And the regulator is the regulator, more than its voltage regulator value, as long as the power does not exceed its tolerance value, it will be stable in its regulated value range.TVS is a transient suppression diode that is mainly used to suppress instantaneous voltage spikes and reduc

output capacity can not do the double pole so large. The output capability looks at the area of the IC's internal output pole N tube p tube. Compared with the open-drain output, the high and low level of the push-pull is determined by the IC's power supply, and cannot be simply done by logic operation. The Push-pull is now the most used output stage design in CMOS circuits.Of course, open drain is not with

transient)Persistent: Persistent state(and the database records the PO instance that you want to insinuate, its state is persistent, the objects obtained by get and load are all persistent)Detached: off-tube or Free State(1) When the PO objects obtained through the Get or load methods are persistent, but if the delete (PO) is executed (but the transaction cannot be performed), the PO status is detached, (indicating and session out of association), A

transient)Persistent: Persistent state(and the database records the PO instance that you want to insinuate, its state is persistent, the objects obtained by get and load are all persistent)Detached: off-tube or Free State(1) When the PO objects obtained through the Get or load methods are persistent, but if the delete (PO) is executed (but the transaction cannot be performed), the PO status is detached, (indicating and session out of association), A

The motherboard does not light maintenance methods: Example 1. A pci1600-f motherboard is not lit. First of all, visual inspection, found that the Power control IC U24 (AIC1569) surface has burned traces, welding U24, check the peripheral circuit did not see abnormal. The board returned to normal after replacing the U24. According to the user reflects this problem is more common, AIC1569 purchase is more problematic, I found from the data can be used HIP6004 directly substitute it. Example 2.

following reasons: 1. Power shortage of AC power supply The external power supply is not enough, causing some old display or some power-consuming monitor can not start normally, it is one of the reasons of black screen fault caused by the monitor's own fault. or external power supply voltage instability, too low can cause the monitor does not work. 2. Power switch Circuit damage The failure of the display switch circuit is the main cause of the failure of the monitor's black screen. Simple,

There are 3 types of Hibernate objects: Transient (Transient), persistent (persistent), and off-state (Detached). Objects that are in persistent state are also known as PO (Persistence object), and instantaneous and de-tube objects are also known as VO (Value object).instantaneous StateA Java object that opens up memory space by the new command,eg. person person = new person ("xxx", "xx");if the object is not referenced by a variable, it will be recla

=5.4,2,30.2,4,0,6,7.7,3.8,2,3,4 Use the following parameter to get the picture above: I now want to get to such as 5.4 inside, I divided into three properties, and display the name of each column, how to improve the code. And the following types are not limited, such as steel pipe, aluminum tube, copper tube, gold tube, ... There are a number of. But there ar

service" text production:① Level 1-dark blue text: use a text tool to write the four words "ultimate service". The Source font is thick and the font size is 105. Fill in the dark blue:② Second-Tube: Press ctrl again, click the text layer to form a selection box, create a new layer, make a light blue 3-like sketch edge on the new layer, the layer is named as the tube. As follows:Select this l

From: http://hehongqing168.blog.163.com/blog/static/19687667200962754425274/ 1. If you enter a high level, and the output requires a low-power period, select the first line of the line. 2. If you enter a low-level device and the output requires a low-level device, select PNP first. 3. If you enter a low level, and the output requires a high-power period, select the first line of the line. 4. If you enter a high level and the output requires a high level, select PNP first. High voltage, polar e