Precision LED Driver with discrete component

104

00:47:43

Uses two constant current circuits in cascade to regulate 100 mA LED current within 0.01% with a supply voltage varying from 11.0-16.0 V. Note that slow supply voltage changes are regulated even better.  The 53.3 Ohm resistor was selected to produce three significant digits precision on the current scale. The 1 megohm resistor guarantees startup. 

published 7 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.