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. In fact, their varying curvature is not that large. Because the time constant composed of the energy storage filter inductance L and the energy storage filter capacitor is very large compared with the switch ON or OFF time (sine curve cycle:
(1-17) and (1-18) are the formulas used to calculate the filter capacitance of the tandem switching power
ATX power supply. As long as the PC is plugged in, pin 9 should have 5 VDC (volt DC ). This is the same whether the main power switch is on or off. Because it is usually a purple wire, you can easily identify pin 9. Using A multi
-6-3-2. Calculation of parameters of the transformer of the excited switch power supplyThe parameters of the transformer of the excited switch power supply are mainly calculated from these aspects. One is the turns of the primary coils of the transformer and the volt second
The basic function of the power supply in the computer is to convert 220V alternating current into the low-voltage DC power required by the computer, generally it is difficult to see the effect on the performance of the whole machine intuitively. But as a source of power, power
consists of inductance and capacitance and electronic components. It is used for Active Power Factor Correction. Generally, the power factor can be increased to more than 0.98. Active PFC is the trend of the times, so it is recommended that you choose an active PFC power supply when purchasing.
Stability issues
After
stable and long-term operation. After rectification, it enters the switching circuit at the power level. The components here determine the maximum output capacity of the power supply, which is a very important part of the power supply.
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Troubleshooting vswitch faults: for power supply faults and port faults, in the Internet era, you will often encounter troubleshooting vswitch faults. The following describes how to resolve vswitch faults, including how to solve power supply faults.
No matter how good the performance of a
Nowadays, switching power supply has replaced linear regulated power supply and is active in the electronic power design field. People gradually realized that the switch power
Some external factors can cause the switch to not work properly, such as external power supply instability, power line problems and so on. It will also cause damage to the internal parts of the switch due to power problems. If the
signal obtained from the load is output ahead of time by adjusting the delay circuit, and the self-excited square wave signal is obtained through the zero-crossing comparison circuit. Before the inverter works, the voltage on the load is zero, so start with him. After the inverter is started successfully, when the power supply output voltage reaches a certain value, the level detection circuit outputs a fl
The so-called power transfer is the input voltage through the pressure circuit to achieve the lift/buck function for the use of other modules, intelligent car production, the input battery voltage of 7.2V, the other modules required voltage as follows: Minimum system board/oled/Eagle Eye camera 3.3V, op amp power supply ±5 V, servo
Failure phenomena:
When you find that the host is not power-up (that is, the machine is not on), follow these steps:
Solution:
1. Check whether the power supply is normal
First of all, look at the home of the other appliances are normal use, the same socket on the other appliances can work properly.
You can plug the computer into other sockets. Test if there
For Win7 system users, sometimes when we are on the switch, occasionally we encounter Win7 system screen display "Please do not shut down the computer or unplug the power cord, the update is being installed," or the word "Configure Windows Update do not shut down the computer", For this kind of problem is because the system is performing patch update, and for urgent need to go out or work, we can only be ho
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