FET constant current sources use JFETs and MOSFETs to deliver a load current, which remains constant despite changes in load resistance or supply voltage. A FET constant current source is a type of ...

In this paper, the authors present a constant voltage constant current readout circuit for Ion-Sensitive Field-Effect Transistor (ISFET). The study and investigation of ISFET performance using linear ...

Some circuits require a constant-current source thatdoesn’t necessarily connect to a power-supply rail or toground. The circuit in Figure 1 shows a simple method forachieving that configuration.