ISO V-4-20mA (SIP12 Pin) and ISOS V-4-20mA (SIP 7Pin) Passive V/I Conversion SimulationSignal isolation amplifierIt is a signal isolation transmission module powered by a voltage input and two-wire current output circuit. By feeding through the downstream current loop, a set of 5V (3mA) functional extension power supply is provided to the input terminal to power the front-end equipment, and the voltage signal output from the front-end equipment is received. After module isolation, a standard two-wire current signal of 4-20mA is output. This scheme adopts electromagnetic isolation mode and high-efficiency post feeding technology to achieve precise isolation and conversion of voltage signals to 4-20mA standard signals, which can be matched with analog input ports of various instruments (such as PLC, DCS systems, etc.). This technical solution is very convenient to use, without the need for any additional components, and can achieve voltage signal isolation and transmission for voltage signal input, displacement potentiometers, and other power distribution sensors or bridge (weighing) detection circuits.