We know that the three major accessories of CPU, memory and graphics card directly determine the performance of the whole machine. Whether the purchased motherboard can provide sufficient and stable power supply environment for these three accessories has become a very important factor. The power supply circuit of CPU is usually composed of three parts: capacitor, inductor coil and field effect transistor (MOSFET). In addition to providing a more pure and stable current for the CPU, it also plays a role in reducing the current limit to ensure the normal operation of the CPU. In the power supply circuit of the main board, the higher the specifications of the capacitor and the inductor coil and the more the number of field effect transistors, the better the quality of the power supply circuit.
all solid state motherboard motherboard
1. what is a solid state capacitor?
The full name of solid state capacitor is solid aluminum electrolytic capacitor, which is the highest end capacitor except tantalum capacitor. It uses high conductivity molecular material, while ordinary electrolytic capacitor uses electrolyte.
What is the role of 2. solid state capacitors?
It can be said that the capacitor is the key to ensure the quality of the motherboard and graphics card, but also can be said to be the focus of the board work. Whether it is a popular solid-state capacitor, or by many netizens scold the electrolytic capacitor, their role is the same, the role of the capacitor in the motherboard and graphics card mainly to ensure the stability of the voltage and current (play the role of filtering).
The main function of the capacitor is to further filter some current spikes and clutter, so as to ensure the stability of the power supply of each part. The function of the capacitor is similar to that of the reservoir. It will release water when the water flow is large, and store water when the water flow is small, so as to ensure the balance of water storage in the reservoir.
3. how to distinguish solid state capacitance?
Solid capacitor is the use of different dielectric, it is the use of polymer materials instead of electrolyte, in fact, it is easy to distinguish from the appearance, but there are some special cases, generally speaking, electrolytic capacitor plastic wrap wrapped capacitor, and solid capacitor is wrapped by aluminum shell, of course, there are some individual examples. For example, the famous Sanyo OSCON solid-state capacitor uses a purple plastic sheath.
At present, the aluminum shell capacitors appearing on some low-end motherboards and video cards are also made of electrolyte, but they are wrapped in aluminum shell, which makes people mistake them as solid capacitors. Here we need to see if there are explosion-proof patterns similar to crosses or K characters on the capacitors. If there is an explosion-proof pattern, it should not be a solid capacitor.
The top with a K-word or cross explosion-proof pattern is definitely not a solid capacitor?
No! The main function of the K or cross at the top of the capacitor is to buffer, while the solid capacitor does not necessarily expand like the liquid capacitor, because as long as there is internal resistance, the capacitor will heat up, the hot air inside will expand and rise, and the shell will expand. However, the stability and expansion range of the solid capacitor are much smaller than that of WWW.PC841.COM computer Pepsi network, so most solid capacitors do not need explosion-proof marks. Such as Sanyo, Ruby, Sacon and other brands of capacitors.
However, there are still some brands of solid-state capacitors that use explosion-proof patterns for safety reasons. The advantage of doing so is to extend the service life of the capacitor. The more common one is the yellow Fujitsu R5 solid-state capacitor, which is preferred by domestic Onda board cards. In addition, there are a number of solid capacitors with K-shaped detonation grooves, such as Nichicon395, Toshiba 78K and Hitachi GTE. Therefore, judging whether the capacitor is solid or not cannot be simply analyzed from the appearance. Those with K-shaped or cross explosion-proof patterns are not necessarily not, and those packed with aluminum shells are not necessarily all. To judge whether it is a solid capacitor, the key is to look at the dielectric. On this point, we have designed more professional knowledge. Therefore, we ordinary consumers need to rely on the integrity and reliability of the manufacturer to know more about the solid capacitor of the product.
Advantages of 4. solid state capacitors
1. put an end to the explosion phenomenon. The dielectric of electrolytic capacitor is liquid electrolyte. The liquid particles are very active at high temperature and generate pressure on the inside of the capacitor. Its boiling point is not very high, so there may be explosion. The solid capacitor uses polymer dielectric. The solid particles are lower than the liquid electrolyte at high temperature, whether the particles are surging or active, and its boiling point is as high as 350 degrees Celsius, therefore, the possibility of explosion is almost impossible.
Second, solid-state capacitors perform better than traditional electrolytic capacitors in terms of equivalent series impedance. According to tests, the equivalent series resistance of solid-state capacitors is extremely small when operating at high frequency, and the conductivity frequency is especially good. WWW.PC841.COM, which has the characteristics of reducing electrical impedance and lower heat output, is most obvious between 100KHz and 10MHz. Traditional electrolytic capacitors are more susceptible to the temperature and humidity of the environment, and are slightly worse in terms of high and low temperature stability. Even at minus 55 to 105 degrees Celsius, the ESR impedance of solid state capacitors can reach 0.1 to 0.3 ohms, but electrolytic capacitors will change due to temperature.
That is to say, the sensitivity of solid-state capacitors to temperature is not very high, and electrolytic capacitors are more susceptible to temperature. In terms of capacitance value, liquid capacitance below 20 degrees Celsius will be lower than its marked capacitance value. The lower the temperature, the lower the capacitance value will decrease. The capacitance will decrease by about 13% at minus 20 degrees Celsius and reach 37% at minus 55 degrees Celsius. This has no effect on ordinary users, but for players who use liquid nitrogen as the ultimate overclocking, the solid-state capacitor can ensure that the capacitor capacity will not be affected due to the decrease of temperature, thus causing the overclocking stability to be greatly reduced, because the capacitance value of the solid-state capacitor will only drop by less than 5% at minus 55 degrees.