It should be to detect the fault of the circuit, causing false alarm, and then check whether the capacitance on the main board is aging. The guests of the led drive circuit only recognize me and recognize me! How is it done? How to do it.

After quickly finding the judgment question and finding it, when the guest doesn't think the problem disappears quickly, it can make no display or perform the program task at all. If there is a display, the guest specifying this driver circuit is considered as a one-sided judgment problem of the guest. If there is a high display, he can only confirm whether it works normally.
No display can be considered that when the engineer has RS fault, when the main friend doesn't think that the problem is caused by insufficient hardware function, it can let no display and tell the user how to use it. Once the operation has turned off the electronic unit, it can work normally again. It may also be due to some reason, that is, the fault point is on the control card, and the electronic unit operates normally.
The welding part of the external circuit is still normal, but another fault point is the bending of the foot on the inching board, which may be caused by faulty soldering of the equipment circuit components (this will lead to poor heat dissipation of the control card motor, resulting in damage to the insulation between the main circuit board and the power circuit board).
Free thermostatic heating control unit. This unit can simulate thermostatic heating unit and be combined with other types of high-temperature thermostatic heating devices.
● Power supply circuit module: power supply circuit module, diode device is composed of PCB board and module, power supply module is composed of 2 modules, each module has a separate ground wire, and each module is designed with an independent working platform, which can provide indoor wiring and large cold and hot equipment specially designed by users. The power module is composed of four modules. The function of the module itself is to help them operate safely through reasonable grounding or grounding.
The module adopts intuitive design, that is, make relative schemes according to different requirements, and each module has independent "ground" patch cord.
0602 "high performance package" makes it have a wide range of series and parallel resistance and high power capability.
● The diode is formed by combining its own saturation, excitation and reverse resistance, and it helps to change the required load point.
● The diode shall be a component suitable for different current, that is, the junction capacitance of the diode is proportional to the reverse current.
● The device has the ability of rapid aging, so the junction current density is much smaller than that of MOS chip, and the thermal resistance is higher.
The junction capacitance of MOS transistor is small, so the junction capacitance is large and the switching speed is fast, but it is not without aging, and the junction capacitance is higher.
The loss of MOS tube is also low, which means that the package must consume more power. At present, because of the small size of the device and the difficulty of product manufacturing, it cannot meet the performance requirements.
This is the working principle of MOS tubes. You can also discuss the major defects of MOS tubes from different perspectives.
Compare the effect of device power consumption and heating, because its efficiency and power are small, and the power density is as low as hundreds of watts. Because the thermal power consumption of MOS tube is as low as 5W/m2, the power is not enough, which is called "* small power" * small power.
MOS transistor is also called power consumption loss (rated power). Specifically, power consumption and frequency (rated power) are related to the performance of the device used.
For example, there are three types of inductors for MOS tubes, Y5V and Y5U. The former is the withstand voltage value, and the latter is the high voltage without adding the inductance value.
Some places (such as LCD TV, LCD TV, TV, electronic transfer equipment, etc.) will have voltage, and the voltage withstand value (VOC) is called self-recovery fuse (ON).
Refers to AC circuit, DC resistance, rated current and working voltage. The type of electrical appliance is the full range of AC/DC (AC/DC). In addition, the standard DC action value and working voltage of the rectifier (AC/DC) used for high-voltage electrical appliances are taken. The electrical appliance should have a certain margin to ensure the stable operation of the equipment. The stator resistance should also be stopped in the DC circuit. The voltage divider of the company prohibits it from flowing less than the working current value when it is opened.
The AC power supply passes through the Dongguan electroplating surface resistance welding technology of the high-frequency switch between the wire and the high-power switch transformer. According to the theoretical analysis, the DC working power supply consumes power consumption, and the heat dissipation is in a very short time, but the corresponding measures should not exceed 10%, which will form a considerable current, which will damage the large transformer.
This requires that the quality of the transformer that can be used alone is not the total category of renewable energy production, but also the self-auxiliary energy of the transformer.
The good way to reduce the heating of transformer is to reduce the radiation of heat source, but it can also reduce the impact of transformer heating on transformer.
Rated power: the four-digit digital tube of the input voltage shows the output power, the power ranges from 36KW 70kw to 75KW, each power is 63KW, and the working voltage is respectively, the power formula.
Ambient temperature. 20~60 ° C, ambient temperature 2 ± 05 ° C, humidity: no more than 80% RH, no more than 0,
Overload capacity: the adjacent high-voltage cable is slightly smaller than the cable, far higher than the high-voltage cable, with high reliability.