DIODE_FEEDBACK_COMPARATOR

Published:2009/6/25 1:34:00 Author:May | From:SeekIC

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 cir-cuit 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.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Electrical_Equipment_Circuit/DIODE_FEEDBACK_COMPARATOR.html

Print this Page | Comments | Reading(3)