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LED multi string linear constant current sink 01 PUBLICDC Sweep doesn't simulate properly in CL for all values of R7. Time Domain simulation shows erroneous current spike at startup. See below. by signality  updated April 15, 2013 constantcurrentsink constantcurrentsource led ledarray ledstring 

LED multi string linear constant current sink 03 PUBLICThis slightly simplified version of: LED multi string linear constant current sink 01 simulates fine in DC Sweep and Time Domain. by signality  updated April 15, 2013 constantcurrentsink constantcurrentsource led ledarray ledstring 

LED multi string linear constant current sink 02 PUBLICAn attempt to get the time domain sim of: LED multi string linear constant current sink 01 to work properly. It doesn't. Time Domain simulation still shows erroneous current spikes at startup. by signality  updated April 15, 2013 constantcurrentsink constantcurrentsource currentsink led ledarray ledstring 

2 transistor constant current sink 01 PUBLICQ2 collector current is held roughly constant over a wide range of V1. Use PNPs for a current source. F5 to simulate. by signality  updated April 15, 2013 

constant current sink LED driver linear 01 PUBLICA precision current sink using an opamp. Simulate > Time Domain > Run TimeDomain Simulation by signality  updated February 24, 2013 constantcurrentsink currentsink opampcurrentsink precisioncurrentsink 
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