There are 3 USB converter circuits CP2102 USB communication as in the isolation section of the ISO7221 standard is being used. USB/RS232 adapters isolated TTL (RX-TX), isolated USB/RS485 adapter (+ max13488) usb1wir isolated adapter (+ DS280) All prepared with... Electronics Projects, Isolated USB Adapters RS232 RS485 "analog circuits projects, " Date 2019/08/03