Connecting a single LED directly to the 1.5v battery does not gives much brightness or maximum efficiency of the light. To get maximum light from the LED we need a LED driver circuit to boost the input 1.5 v to high power. In this project i am sharing the circuit diagram and its components details to build a 1.5 v mini flashlight circuit.
1.5v LED driver circuit diagram
Working of LED Driver Circuit
LED needs more power to emit more light, so we need to boost the 1.5v to a higher current. This can be done through this simple led driver circuit. The circuit is built with MPSA06 NPN transistor, and 100 uh inductor coils. The connected components will boost the voltage and current to the output section of the circuit and the connected LED will glow very bright.
MPSA06 NPN Transistor pinout
