Simulating a fan for my Raspberry pi.
Fan is 5V, 0.15A and substituted here with a Lamp of 5v, 750mW as I figured they were equivalent.
Top circuit is the goal. Lamp is receiving 150mA.
The bottom three have an additional 3.33V source, one that will come from a GPIO and act like a control pin.
Why is the output so much better if I put the the transistor between Lamp and Ground instead of Lamp and 5v Battery?
