Switching power supply isolated design, what is the meaning of isolation?
In simple terms, isolation means that electrical insulation is insulated from each other and can not be directly energized. The purpose of isolation is generally for safety reasons, and not isolated in the security is not guaranteed (the internal circuit is a channel, will be direct conductivity), but not isolated also has its benefits, that is, the line is simple, relatively isolated products It is more efficient.
Switching Power Supply The dual isolation design means that the transformers inside the power supply are electrically incompatible (they are magnetically coupled, the primary windings and the two secondary windings are not connected to each other), and the corresponding external and electrical paths are also Unrelated, both outputs are not common
Isolation is achieved through the transformer, in the design of switching power supply when the use of isolation transformers (primary winding and secondary winding is not connected), so that the output of the power supply and the input power is not common, dual isolation is the switching power supply of two Road output are not common.
The advantage of isolation is that the primary side of the transformer or the side of the circuit when there is a short circuit will not burn the other side of the components.
