I've started learning about transistors and was working on this circuit, and have fiddled around with the circuit simulator for a couple hours, but can't seem to find an efficient design for what I want.
Because of the 20k resistor heavily limiting the current in the bottom transistor, I added a second transistor to "amplify" the current.
Now, I'm trying to create a circuit where the LED will consume around 1-3 watts of power, while leaving the 20k ohm resistor as it is. Lastly, the resistors should consume less than 3 watt of power.
To try to achieve this, I tried adding resistors at different places and editing their values, but I wasn't successful. Does anybody know how to make this possible? You can add or delete resistors and transistors as needed, however, the 20k resistor should remain where it is. Thanks for any help guys!
Here's the link to the online circuit simulator: https://www.falstad.com/circuit/
EDIT: The voltage source can be anything from 10-20V. Whatever voltage works is fine!