so happy

High frequency power adapter According to the internal structure analysis of the power adapter, the power adapter is a working circuit principle that utilizes the power adapter. (1) Main circuit 1) The role of the input filter is to filter the clutter present in the grid, and also to prevent the clutter generated by the power adapter from feeding back to the AC grid. 2) The rectification filter directly rectifies the AC voltage of the AC grid to a smoother DC voltage for the next level of conversion. 3) The inverter converts the rectified DC power into high frequency AC power, which is the core part of the high frequency power adapter. The frequency is higher. The ratio of height, volume, weight to output power is smaller. 4) The output rectifier filter provides a stable and reliable DC power supply according to the load requirements. (2) Control circuit On the one hand, sampling from the output, comparing with the set standard, then controlling the inverter, changin...

Professional  phone headset wholesale suppliers  tell you how to increase phone headset life 1. Do not wear headphones when you are sleeping. When you are sleeping, people will often move. With headphones will be wrapped around the neck and twisted together with the two headphones, the headphones will be crushed. 2. Wipe the sweat on the headphone cable after using the headphones. Something secreted by these humans, containing fat or something, is at the bend of the ear. After a long time, the wire rod will age, eventually leading to cracks and cracks. 3. It is best not to smoke when using headphones. Accidentally, the earphone shell and headphone cord will be burned. In addition, soot will enter the earphone shell and stick to the shock film, and the sound quality will become worse after a long time. 4. Be sure to turn down the volume before use. If the volume of your output device is too loud, not only will your ears be shaken, but lighter membranes will wrinkle. S...