NFET with parallel power supply

[cyrusthevirus]

Will the circuit below work? Are there any concerns?

 

[Hero999]

1) No.

2) Yes, there's no current limiting for the LEDs so they will blow up.

 

[cyrusthevirus]

The circuit I have is much more complex and has limits to prevent the leds from blowing up. My question is directly related to the NFET. Can I connect two different power supplies to it or is it a one-to-one relationship?

 

[Hero999]

Yes, it will work, as long as there is something to limit the current.

If you don't want to draw the load, it's standard practise to replace it with a resistor labled RL or load.

 

[cyrusthevirus]

Great.

Thanks for the tip. I will adjust in the future.