I needed to build a delay circuit so I'm following this guide: http://www.learningaboutelectronics.com/Articles/555-timer-delay-before-turn-on-circuit.php
Using this circuit, I get a delay of about 5 seconds before the LED turns on. The only big difference is the output of the 555 is going into the gate of a IRFZ44N MOSFET as I needed more power.
The MOSFET source is hooked to ground, and the drain is hooked to a 330 Ohm resistor -> LED -> 5V.
However, with 5V input voltage, I can only get 3V across the drain and source. How could I improve this circuit to give me more efficiency, closer to my 5V?
EDIT: I'm following the schematic from the guide. It's exhibiting the same behavior as the guide, so the timing circuit should be correct. The only difference is the MOSFET. I also added a 330 Ohm resistor between the 555 pin 3 output and MOSFET gate and now I'm getting full voltage from drain. Looks like the gate was leeching some voltage.