Dec 16, 2013 #1 Cree Led Banned Joined Dec 16, 2013 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 0 I need a schmatic driver for led cree xm-l t6 , with discret components(resistor,transistor,etc) . 3.2-3.7 V , 3000mA (max) . Thx!
I need a schmatic driver for led cree xm-l t6 , with discret components(resistor,transistor,etc) . 3.2-3.7 V , 3000mA (max) . Thx!
Dec 16, 2013 #2 betwixt Super Moderator Staff member Joined Jul 4, 2009 Messages 16,255 Helped 5,140 Reputation 10,309 Reaction score 5,123 Trophy points 1,393 Location Aberdyfi, West Wales, UK Activity points 137,572 You need to give more information than that. What supply are you starting from? Brian.
Dec 17, 2013 #3 Cree Led Banned Joined Dec 16, 2013 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 0 Informarion : led cree -> 3.2-3.7 V , 3000mA (max) Starting from 0 (zerro) .
Dec 17, 2013 #4 betwixt Super Moderator Staff member Joined Jul 4, 2009 Messages 16,255 Helped 5,140 Reputation 10,309 Reaction score 5,123 Trophy points 1,393 Location Aberdyfi, West Wales, UK Activity points 137,572 Are you saying you want to drive it from a zero volt supply? Keep dreaming. Brian.
Dec 18, 2013 #5 Cree Led Banned Joined Dec 16, 2013 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 0 No,i want to use my reglable power supply (max 18.5V ) . The output of driver led cree i want to be constantly , 3V-3A .
No,i want to use my reglable power supply (max 18.5V ) . The output of driver led cree i want to be constantly , 3V-3A .
Dec 18, 2013 #6 M mtwieg Advanced Member level 6 Joined Jan 20, 2011 Messages 3,835 Helped 1,310 Reputation 2,626 Reaction score 1,405 Trophy points 1,393 Activity points 29,372 Why discrete components? That just makes things more complicated... Do you need isolation? Dimming?
Dec 19, 2013 #7 schmitt trigger Advanced Member level 5 Joined Apr 17, 2013 Messages 2,725 Helped 859 Reputation 1,722 Reaction score 850 Trophy points 1,393 Activity points 18,445 Power dissipated in a discrete component linear regulator: (18.5- 3.5)*3= 45 watt Power actually employed by the LED: 3.5 * 3 = 10.5 watt Total power: 45 + 10.5 = 55.5 watt Efficiency: 10.5/55.5 = 18.9%
Power dissipated in a discrete component linear regulator: (18.5- 3.5)*3= 45 watt Power actually employed by the LED: 3.5 * 3 = 10.5 watt Total power: 45 + 10.5 = 55.5 watt Efficiency: 10.5/55.5 = 18.9%