A question with a reward of 1000 points power supply issue .

Based on what you said, I think the fault is with the lines that supply power to the charger and inverter1;Your voltage is measured at no load, that is, when charging the electrical appliance, whether the voltage is 2;Have you tried whether the inverter can work properly at home (with 220 rpm 12V transformer + inverter + PDA charger + electrical appliances).

3；You can use the power supply in the car to directly connect the car 12V to 5V charger and inverter + PDA for detection (Note;Try not to use the power supply in the cab) from the battery in the car, so that the power supply in the cab can be detected.

These are judgments that don't take into account your supplementary questions, but in fact, your supplementary questions are not complete, and they contradict the main question.

Press the above 3 points to detect first, you should be able to check where the fault is, not in contact.

First, I don't think the voltmeter says everything, because this false equivalence can happen due to the long line resistance. Keep in mind that voltmeters may not be accurate.

Some cars have poor circuit design, which leads to this problem. Although the displayed voltage is only at the time when the voltage may be very quickly out of tune at startup, keep in mind that the voltage is falling or rising, which can cause this problem. It's not a lot of jumping, but it will have an impact.

Of course, the power supply in the home is no problem, because the voltage is generally the same and very stable, so that voltage has a reference, so it can be charged normally.

I suggest you try changing the accessories first. This makes it easier to see. Don't say that your car is a BMW, Mercedes will not have this problem. Also, I think there is a problem with the cigarette lighter. You go check it out. My friend's car has also had this kind of problem.

I won't burn the hardware, but since I have a new one, I'd better replace it.

Some people on the Internet say that the power supply will burn the hardware like this?--Misguided, the power supply is too small to burn the hardware. There are only benefits to being too big, there is no harm, it just needs to make more money.

A home computer is enough!If it is an industrial machine, it is recommended to use an industrial power supply, the power cord is different, much thicker!

The power supply is not enough to destroy the hardware, and I have never heard of the power supply destroying the hardware.

What kind of good power supply do you want for this, and there is no independent display, ordinary 350W electric laughter source OK, you can use a better one if you have money, Huntkey Cold Diamond.

You also want me to introduce the case, buy it if you have money, buy it if you don't have money and go to the hall.

It is recommended to change to a rated power of 450W, I used to be 300W broken, I bought a 450W, and the power supply did not need to be changed after the computer upgrade. power words.

You first go to**look,Look**,From**It can be seen that the workmanship of the power supply,Now the Great Wall has been rotten is not necessarily very good,Find some emerging brands,Because these products are in the reputation, so the workmanship is relatively solid,At present, the workmanship should be highly praised, it should still be Huntkey、Corsair、Gujia module (gold certification) is**Some high。

Huntkey R80 400W, one step in place, you have no problem, if you want to be a little better, R80 500W has white label certification, absolutely no problem.

Generally speaking, there are two kinds of car power failure, 1, generator failure 2, battery failure. These are the two main power sources of the car. Be sure to distinguish between these two points, what is there, just ask!!

A lot of things like battery loss, poor contact, short circuit, difficult start, weak start, etc., you can say it specifically, I hope it will help you.

Wuda, right? How can this make the teacher embarrassed?

Huntkey Power Calculator.

Choose how big you are.

Active PFC is superior to passive PFC power supplies.

PFC is mainly to save power for the national grid, so there is no such thing as active PFC can save power for itself more than passive PFC. However, the general active PFC circuit can cope with greater current fluctuations, and the conversion efficiency of the active PFC circuit is usually higher than that of the passive PFC, so the active PFC saves power for itself, which is not the credit of PFC, but the advantage of the design structure.

Passive PFC is a cost-effective option. Although the passive PFC conversion efficiency is not high, it also means that it is more cost-effective to some extent. Active PFC power supplies tend to be more expensive.

That is the maximum power that the power supply can provide, either the standard W or the W used

In a word, power quality is the key, as for power, what you say 400W should mean the maximum output power, that is to say, you buy a good brand of power supply first, and then pick a suitable power, if you buy too much power, the bad thing is that it is too expensive.

1.Now the power supply is rated at least 200W, so the power supply on the market can be used, but the power supply is better than the ordinary power supply, and the material and mains filter are much better than the ordinary power supplyNo, 3

Rated 300W is OK, the overall W number of the computer is the maximum power W, so there will not be so much usually, so use the rated 300W on the line, as for the active passive, active is good, but the passive is on the line, the power supply must be a good brand, the overall quality of the small brand is much worse,

The output power of a good power supply is relatively standard, the rated power of the power supply is a little less than the total power of the computer configuration, 200W with a rated 400W power supply is too wasteful, and the computer should be 305W with a rated 320-350W power supply is enough, choose the active power supply.

Pinch the power socket of the graphics card with your left hand, pinch the card with your right hand, and sway it up and down with your right hand to unplug it without worrying about damage.

I deliberately drew pictures to make it easier to understand.

Small openings in the dark, pulled out, are 6 pairs of threads, you see one is black and the other is white gray, which can be separated from the middle, but there is a button to buckle up.

Press and hold the black hook and pull it out, the graphics card plug is hooked, and the tail will be up.

Pry the black inverted buckle open and you can pull it out.

Of course you can, but I'm a little confused about your approach, yours is that the power supply fan is noisy, so why don't you just take the movie apart to remove dust and add oil, and the new fan is connected to the motherboard? Are you a CPU fan or a power supply fan? Where do you still need to wiring the power fan......

The fan of the power supply is directly connected to the line of the original fan, (the power supply fan is generally 2 lines of 12V power supply) or directly connected to the 12V of the power supply on the yellow line, in telling you a simple method, you can remove the fan and turn the sewing oil on it, it is very easy to use.

Of course not. If you have better hands-on ability, you can disassemble the power supply and replace the cooling fan by yourself. Some fans are soldered to the circuit board, while others are plugged in directly and replaced as appropriate.

If it's just a matter of dust accumulation, just take it apart and clean it up. If you want to update, pay attention to buying a two-line brushless fan, not a CPU three-wire fan.

It costs less than 20 yuan to buy a fan, and it costs more than 200 to change the whole power supply chassis.

Remove the power supply, you can see the situation of the fan with the small screws around Ningxia, remove the fan, replace it with a new one, connect the wire, and reinstall it!

What is the fart relationship between the power supply fan and the chassis? It has nothing to do, the power supply fan is divided into 8cm and 12cm, take it apart, replace it, and wire it yourself.

The i5 2300 is 95W at full load, the GTX550 Ti is 110W at full load, and the whole machine is about 230W at full load. It is recommended to choose a power supply with a power rating of 350W or higher. The power saving king series of the Great Wall is the most suitable for DIY players, the power saving king enthusiast version GW-5000 (85+), rated power 400W, 80PLUS bronze, the power saving effect is very good, it is recommended to buy.

Great Wall Power Supply 350w Great Wall Power Supply Everyone is using it rest assured.