SATURATION-CONTROLLED LOOP CURRENT REGULATOR

摘要

A process transmitter (100) includes device circuitry (118) that generates values that are to be conveyed on a current loop (116). A series control transistor (Ql) is in series between the current loop (116) and the device circuitry (118) and a saturation prevention circuit (Q2, Dl) prevents the series control transistor (Ql) from entering saturation.