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The EC settings of the Mosfets will alter the way it works in your schematic. Look at the similar special LEDs here, and see their oscilloscope traces.(ignore all switches which are there just to keep the lines straight).
The red one at the far right has unaltered default settings. It is not usually a good choice for most applications.
See how its mosfet gate is sluggish with no visible LED and an amp meter current of max 5.29mA ...see its red trace on the oscilloscope. The gate is not allowing an adequate current through for this special LED to work properly.
The orange one next to the above is a little better, but not a lot. It has max 292mA ....see its orange trace.
The green one, second from left is a lot better with a current max of 749mA....see the green trace.
The blue one at the far left is about as good as it gets.....sharp on/off with the full 1A available current...see its blue trace.
RED: default ... no alterations to this mosfet.... a poor choice for general use.
ORANGE: ... Length turned anti-clockwise fully only...a little better, but still a poor choice for general use.
GREEN: ...Width turned clockwise fully only....also better, but still a poor choice for general use.
BLUE: ... KP turned fully clockwise and the Width and Length altered fully as above orange and green here also....good choice.
and set the gate voltage threshold VTO to 3V
I recommend that EC users alter their mosfets to this blue setting as above for general purpose.
Altering the gate voltage or its threshold (VTO), or the drain supply will also alter the trace, so things can get tricky, but the above general settings are probably your best bet for most purposes to give a real mosfet switch simulation on EC
For more detail see: .... http://everycircuit.com/circuit/6359306484318208
As a quick fix....just turn the default red KP mosfet setting fully clockwise and see the LED somewhat better.
In your schematics: put the Source arrow directly to earth and keep all loads on the Drain side of the Nmosfet.
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