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LED multi string linear constant current sink 01

LED multi string linear constant current sink 01 PUBLIC

DC 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

constant-current-sink   constant-current-source   led   led-array   led-string  

LED multi string linear constant current sink 03

LED multi string linear constant current sink 03 PUBLIC

This 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

constant-current-sink   constant-current-source   led   led-array   led-string  

LED multi string linear constant current sink 02

LED multi string linear constant current sink 02 PUBLIC

An 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

constant-current-sink   constant-current-source   current-sink   led   led-array   led-string  

2 transistor constant current sink 01

2 transistor constant current sink 01 PUBLIC

Q2 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   constant-current-source  

constant current sink LED driver linear 01

constant current sink LED driver linear 01 PUBLIC

A precision current sink using an opamp. Simulate > Time Domain > Run Time-Domain Simulation

by signality | updated February 24, 2013

constant-current-sink   current-sink   opamp-current-sink   precision-current-sink  

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