Second, the difference between isolated power supply and non-isolated power:
1, security issues. Isolated drives are safe but inefficient, and non-isolated drives are more efficient. The isolated drive or non-isolated drive should be selected according to the actual use requirements.
2. In terms of circuit structure, most of the current isolation schemes are AC /DC flyback circuits, so the related circuits are more complicated and costly. The non-isolated type basically adopts DC/DC boost or buck circuit, which is relatively simple, so the cost is relatively low.
Extended data:
1, isolated power supply In general, the power frequency transformer of 1: 1 is used to isolate the input power of the experiment from the mains supply. In this way, no matter which wire the laboratory experimenter touches, there is no danger of electric shock, because the isolated power supply is not grounded.
2. In industrial control equipment, it is sometimes necessary to isolate the power supply and ground wire between two systems, such as isolating ground wire noise and isolating high * * mode voltage. A DC converter with a transformer is used to separate two power supplies so that they are independent of each other, thus achieving the above purpose.
References:
Baidu encyclopedia-isolated power supply