Any-Battery LED Flashlight - Simulation

A simply and transistor based circuit to allow use of any battery and DC Source to power on the flashlight. You can watch another simulation in Tinkercad: https://www.tinkercad.com/things/4kPd7hMzR7C This schematic is highly customizable. Read full description here: https://www.schematics.com/project/any-battery-led-flashlight-general-schematic-171583/