Darrell,
I made a copy of the Transistor circuit you did and then made a MOSFET version. I had to lower the resistor in the N-channel mosfet circuit from 470 to 140 based on the id current from the simulation. I'm guessing the id current (A) output is in milleamps (ie 4m)? When the resistor was 470, I only got 1.4m(amps?) vs. 4m for the other LED-resistor? I did check the settings for the mosfet and attribute the differences to that. I'll have to look up the specs for the mosfets I ordered and plug them into the simulator.
Here's dumb question, does it matter which side of the mosfet I put the LED and resistor? In the schematic I was following, they had the resistor-LED after the p-chan mosfet (ie gnd side) and it was reversed for the n-chan mosfet (ie resistor-LED on 5v die). I thought I read somewhere it didn't matter, but not sure.
I just got the digikey ship notice today, so a couple days before I can breadboard Getting excited...
Mark
I made a copy of the Transistor circuit you did and then made a MOSFET version. I had to lower the resistor in the N-channel mosfet circuit from 470 to 140 based on the id current from the simulation. I'm guessing the id current (A) output is in milleamps (ie 4m)? When the resistor was 470, I only got 1.4m(amps?) vs. 4m for the other LED-resistor? I did check the settings for the mosfet and attribute the differences to that. I'll have to look up the specs for the mosfets I ordered and plug them into the simulator.
Here's dumb question, does it matter which side of the mosfet I put the LED and resistor? In the schematic I was following, they had the resistor-LED after the p-chan mosfet (ie gnd side) and it was reversed for the n-chan mosfet (ie resistor-LED on 5v die). I thought I read somewhere it didn't matter, but not sure.
I just got the digikey ship notice today, so a couple days before I can breadboard Getting excited...
Mark