Cross load adjustment rate
Cross load regulation rate refers to the change rate of output voltage caused by a change of load in a multi-channel output power adapter. The change of power load will cause the change of power output. When the load increases, the output decreases. On the contrary, when the load decreases, the output increases. The output change caused by good power load change is small, and the general index is 3% - 5%. It is an important index to measure the voltage stabilizing performance of multi-channel output power adapter.
Parallel operation
In order to improve the output current and output power, multiple power adapters can be used in parallel. During parallel operation, the output voltage of each power adapter must be the same (their output power is allowed to be different), and the current sharing method (hereinafter referred to as current sharing method) is adopted to ensure that the output current of each power adapter is distributed according to the specified proportional coefficient.
Electromagnetic interference filter
Electromagnetic interference filter, also known as "EMI filter", is an electronic circuit equipment used to suppress electromagnetic interference, especially noise in power line or control signal line. It is a filtering device that can effectively suppress the noise of power grid and improve the anti-interference ability of electronic equipment and system reliability. Electromagnetic interference filter belongs to bidirectional RF filter. On the one hand, it should filter out the external electromagnetic interference introduced from AC power grid;
On the other hand, it can also avoid the external noise interference of its own equipment, so as not to affect the normal operation of other electronic equipment in the same electromagnetic environment. The EMI filter can suppress both series mode interference and common mode interference. The EMI filter shall be connected to the AC incoming end of the power adapter.
radiator
A heat dissipation device used to reduce the working temperature of semiconductor devices, which can avoid the tube core temperature exceeding the maximum junction temperature due to poor heat dissipation, so that the power adapter can be protected from overheating. The way of heat dissipation is from the tube core, small heat dissipation plate (or tube shell) > radiator → finally to the surrounding air. There are many types of radiators, such as flat plate type, printed board (PCB) type, rib type, interdigital type and so on. The radiator shall be kept away from heat sources such as power frequency transformer and power switch tube as far as possible.
