The audio conversion head has a hole with a ground socket, and the plug part should have a grounding pin. The polarity between the socket and plug should be guaranteed. The protective components such as switches and fuses in the audio conversion head should be connected to the L pole. The rated current of the plug of the mobile audio converter shall not be less than the rated current of the audio conversion head. The operation of switches should be convenient, flexible, accurate and fast, and the operating parts should not stay in the middle position between the open and the broken. The current carrying parts in the switch shall use the metal containing more than 50% of the standard specified in the standard, and avoid using the way similar to copper and aluminum materials. The mechanical contacts of switches should have better breaking capacity, and no larger or continuous arcs can be generated when breaking. There are two kinds of common screw terminals and fast terminals. The latter simply inserts the wires into the terminal holes. The connection is completed, and it will never fall off. It is more convenient to use.
The audio conversion head copper, using the continuous mold process, selects the high quality tin phosphor copper high precision belt one time processing and forming, avoids too many riveting points, reduces the resistance of the material itself, reduces the riveting part and the riveting fever, and fundamentally eliminates the impact of the riveting points on the quality and the safety performance of the audio conversion head. A substantial increase. Fluorescent switches usually have two kinds of coating type and power source, the former is lower in price, but the energy is quickly exhausted after the phosphor is disappearing in the external light source, and it can not play the role of fluorescence. And the power luminescence technology can be used for a long time. The outer shell of the audio conversion head and all the insulating materials used must have good insulation. It ensures that there is enough insulation resistance and electrical strength between the charged parts and the parts that are easily touched and the charged parts of different polarity. The insulation material on the audio conversion head must have good heat resistance and fire resistance, which is a very important index.
