1. In PCB copy boards, signal isolation technology is usually employed to ensure that the circuit board components do not interfere with each other. This technology facilitates the transmission of analog or digital signals without encountering obstacles between the transmitting and receiving ends. It accommodates variations of up to thousands of volts between ground or reference levels at both ends, thereby safeguarding against damage to the loop current caused by disparate ground potentials within the signal.

It is primarily applied in the following scenarios:

2. Within isolation technology, it is imperative for PCB designers to meticulously choose diverse isolation devices based on the varying types of isolated signals and the requisite level of isolation: