@▷ Current Monitor | Diagram for Schematic

Current Monitor

On the circuit diagram, R1 is used to senses current flow of a power supply. We could use JFET as a buffer because Id=Is, therefore the power supply current flow is accurately reflected by the output monitor.

Here’s the circuit diagram:
Current Monitor circuit schematic

[Source: National Semiconductor Application Note]

"Current Monitor Search Tags"
Current Sensor