AC sockets and DC sockets are devices that convert one […]
AC sockets and DC sockets are devices that convert one AC voltage into another (or several) DC voltages through an AC input circuit, a rectifier circuit, and a switching device.
The socket and the power supply are divided into two types: isolated and non-isolated. The "isolation" and "non-isolation" mentioned here are all for the power grid. Isolated socket power supply, also known as off-line outlet power supply, is an AC socket and DC socket. It is characterized by high-frequency transformer and optocoupler feedback circuit to isolate the output voltage from the grid, so that the switching power supply meets the requirements. Safety specifications.
The isolated socket power supply has good safety, but the circuit is more complicated and the cost is higher; the non-isolated socket has a simple circuit but the safety is poor. It should be selected according to the socket designed, the purpose of the power supply and the safety regulations. For example, according to relevant standards, the internal control power of some white goods (such as household air conditioners, dishwashers, rice cookers, refrigerators, household electric heaters, etc.) allows non-isolated switching power supplies to reduce costs. Since the manufacturer's regulations prohibit users from repairing themselves, safety accidents can be avoided.
