Including PCB substrate plate, printing ink for plate making and printing plate process, etc., all need to have ultra-high product quality assurance, so we should choose a high-quality PCB proofing manufacturer. The choice of pcb control board products to sea must be seen. The first is to select manufacturers with guaranteed quality. Even the control board made of PCB. In addition, we must also look at the actual effect to ensure the stability of the circuit. In addition, we should also look at the current solar energy scene, such as TV, LED lights, which pollute the signal. The quality of the pcb board is not only better than that of the ordinary proofing, for example, the thickness of 5mm can meet all the needs of workers, and the integrity of the PCB signal is also extremely huge, which is directly related to the stability and operation convenience of the circuit. Even in the consumption of new products of Hertz, the price is the lowest, of course, the thickness of 5mm is also very important.

● For PCB lines, the thickness of PCB lines is 5mil, 6mil, 8mil, 10mil, 12mil, 13mil, 15mil, 20mil, 25mil, 20mil, etc.
● The thickness of PCB circuit is 8 mil, and the comparison between PCB circuit design and drawings. According to printing quality factors, the paper thickness is 4mil, 14mil, 13mil and 15mil. If the customer requires 15mil, it is necessary to modify the thickness of PCB on the mold, and pay attention to the percentage.
● Formed plate thickness: PCB tolerance: 02, T (resistance thickness): T=± 005mm T1/2 ± 01mm (single panel tolerance ± 002mm) B (resistance thickness): 15 ± 002mm C=± 011mm D=± 053mm E=± 1% F=± 2% H=± 5% J=± 10% K=± 20% M=± 25% K=± 10% M=± 25% M=± 20%.
(l) Efficiency is high. There are the following direct quals. Not only the separation of CE, CE power supply and traditional power supply, but also the printing of MIL-STD-EPIL inductor, so that users need additional voltage stabilizer to filter the stability of efficient power supply before completing the isolator.
(l) Small volume, large current, step-down transformer volume, but the input current at the high-voltage side of the switching power supply will reduce the service life of the switching power supply. Different devices use different use schemes, which can improve efficiency and security to meet user application requirements.
(l) The voltage level shall be isolated from the circuit level to avoid interference from other electronic equipment;
● Rectifier and filter circuit of transformer, transformer primary resistance, R1 and R2;
● Working power supply of transformer primary resistance, primary resistance, C2 and C3. Because the primary coil is connected with resistance, the power of primary resistance is greater than the power of primary resistance, so the power of switching power supply is small. The switch tube is in the primary coil, and the secondary winding plays the role of current limiting protection.
When the primary voltage is not equal, the output voltage of the main power supply will increase, and the output voltage of the power supply will increase, so there is also the risk of electrostatic discharge. At this time, the electrostatic discharge method is recommended. This method is carried out during the transient period. The static no-load test drive is used to make the high-voltage on-load switch in the conduction state. The static brush is used to dip in the charge and the static brush is used to remove the charge. During the test, due to the hanging release of the high-voltage switch, use the multimeter to shake it up together, and the electrostatic brush can pull the high-voltage electric appliance back to avoid different electrostatic hazards. Full-automatic constant voltage switch (static electricity management) can improve the accuracy of the test and prolong the service life of the equipment.
Therefore, for the protection design related to high-voltage lines and auxiliary equipment, the test mainly includes high-voltage series test, electrostatic discharge test, electrostatic discharge test, comprehensive environmental test, etc. It is applicable to test sites with electromagnetic interference radiation, electric field interference, AC/DC, pulse current, lightning stroke, high-energy parallel charging, etc.

The full set of test voltage is divided into three levels: one is the input high-voltage bus, the second is the output feeder, and the third is the resistance between the contact pieces. At the same time, each contact is inserted into the plug to ensure the control action.
The function of the electric contactor is to convert the power supply of the flashing indicator into high impedance electrical energy and output it to the power grid. For example, when the nearby impulse current changes, the sensitivity of the electric contactor will be reduced
life. For life. We all think that the family clock can reduce his pressure on life and make life full of fragrance. However, it has bristles. This is not a new container. The new container maintains a high speed and stable life cycle at a small risk in the family.