In the article:
http://www.allaboutcircuits.com/vol_3/chpt_3/12.html
In one of the last paragraphs it says:
"One application for a constant-current diode is to automatically limit current through an LED or laser diode over a wide range of power supply voltages as in Figure below."
If refers to picture "http://sub.allaboutcircuits.com/images/03300.png". The picture does exist, but it isn't inserted in the article :<
http://www.allaboutcircuits.com/vol_3/chpt_3/12.html
In one of the last paragraphs it says:
"One application for a constant-current diode is to automatically limit current through an LED or laser diode over a wide range of power supply voltages as in Figure below."
If refers to picture "http://sub.allaboutcircuits.com/images/03300.png". The picture does exist, but it isn't inserted in the article :<