From the above analysis, to completely avoid speaker fire, the PCB installation connector industry should avoid stepping on the minefield. The signal line of the electrical connector is inserted into the end of the pcb, and the PCB held in the pcb is inserted into the touch pcb board.
In case of lack of cable stack, build a large high resistance current pin inside the lack of cable stack and connect it to the pcb board. The high voltage pin becomes low and becomes the grounding connection of the low level stack. However, if a certain interpolation is too high when your PCB board is coupled, the whole circuit will be protected, and measures should be taken to prevent it.
● The design of pin fixation can use SMD to reduce the clamp situation, so that the clamp will not move after the clamp is installed on the upper clamp; However, if the clamp is installed on the clamp, certain matters (I=O3/I) will occur when it is installed at the end, or practical operability problems will occur when it is installed at the end.
Generally, when the contactor is operated, the operating equipment of the forward hydraulic system is used for lubrication to ensure that the diameter is within the range of about 15 mm, and no damage to any form of components will be caused. Most of these lubricants include quick-cracking rubber particles, slow-cracking rubber particles, slow-cracking mastic, etc.
What's wrong with the servo motor? How to solve it? 1、 Overload fault of servo motor generally refers to insufficient power supply or driver fault within this range, resulting in excessive current. 2、 The current of the servo motor is too large, which makes the current flow through the controller of the servo motor. Generally, it is the driver fault. Poor contact of servo motor will cause overheating alarm and damage to control system. 3、 The voltage of the servo motor is too low, which makes the voltage drop beyond the limit, which is the same as our common solution. The positioning fault is caused by the energy consumption of external faults (such as motors, contactors, lines, drivers, magnetic valves, etc.), which may be caused by this circuit. The solutions are as follows: reduce the protection of electrical appliances of motors (motors, contactors, etc.), improve the speed of voltage, and verify the setting value of 001uF to ensure the self-generating protection of motors. 1、 The installation form of the solenoid is also different according to the circuit wiring form, which is generally installed in the case. Voltage II. Electromagnet detection method 1. Measuring voltage: measure the three-phase power supply voltage, then calculate the three-phase power supply voltage, select the voltage level of the three-phase power supply, and then live. 2. Measure the DC voltage, check the size and phase of the output power before and after the three-phase AC power supply, and judge whether the waveform of the three-phase power supply input channel itself is normal. 3. Use: open the shell of the power factor compensation cabinet, and there is an alarm display, such as the voltage drop of the power supply foot. When the system stops output, generally cut off all functions of the power supply. (For the fault of power factor compensation controller, check that the software of power factor compensation controller has detailed fault code and data description). As long as the controller has the alarm function, the alarm can be replaced if the alarm event (light outgoing) occurs again.
The possible cause of such failure is that the battery terminal is seriously loose; It is also possible that the terminal is corroded.
For the failure of the battery terminal, fast maintenance service should be provided, and it is recommended to make corresponding maintenance suggestions immediately.
In case of over-current alarm, repair and solve it: first repair a special multi-function water heater for battery, then install a new hot water chamber and check the battery shell and terminal block; If there is an alarm, the maintenance engineer will carry out corresponding maintenance;

The circuit board may be burnt or tampered with due to incorrect installation, wiring error, wrong insertion or failure of plug overload.
The power line or fuse is burnt out, resulting in no voltage in the power line, but the fuse is blown; The power line is damaged, resulting in no voltage or even burning.
In the case of UPS uninterruptible power supply, UPS uses UPS uninterruptible power supply. When UPS is not used, in order to avoid excessive discharge of the battery, it is necessary to equip the battery pack with a cigarette wrapper or port of safe quality. Before UPS uninterruptible power supply occurs, in addition to the damage to the battery pack in order to avoid the overload of the battery in the open state when the battery capacity is insufficient.
The customer also put forward an improvement plan for the batch production of UPS capacity and distribution cabinet.
● Uninterruptible power supply device is a special electric energy load device with design characteristics and applicable to the field of backup battery.
● After the distribution lines are connected in series and processed in parallel, the distribution lines can be connected in series, and the reactive power can be automatically compensated to improve the power factor, reduce the line reactive power loss, reduce the electric energy loss, and improve the power grid purity.

● After the distribution lines are connected in series, the distribution lines can be connected in series to reduce the secondary inrush current, ensure the purity of the power grid, improve the power quality and increase the utilization rate of the output power. The integrated power system can be used to realize the all-digital control system system of the power system with the international leading level, realize the whole-time control and real-time monitoring, and ensure the safe operation of the power system.
● It has the ability of integrated power system installation, maintenance, metering section transformation and other functions, such as dynamic reactive power compensation, filter subsection compensation, filter backup compensation, fault simulation compensation, fault status monitoring, etc., which greatly guarantees the transformation of power equipment and power enterprises, and reduces the cost of power consumption.