Simple Diode Feedback Comparator Circuit Diagram

This is a Simple Diode Feedback Comparator Circuit Diagram. This circuit can drive an LED display with constant current independently of wide power supply voltage changes. It can operate with a power supply range of at least 4V to 30V. With 10M resistances for R2 and R3 and the inverting input of the comparator grounded, the circuit becomes an LED driver with very high input impedance. The circuit can also be used in many other applications where a controllable constant current source is needed.

Diode Feedback Comparator Circuit Diagram

Diode Feedback Comparator Circuit Diagram

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