Description
- Emitter (Pin 3): Connect directly to Ground (0V).
- Base (Pin 2): Connect to your control signal (e.g., a button or microcontroller pin) through a 1kΩ resistor. This resistor is crucial—without it, you might blow the transistor.
- Collector (Pin 1): Connect to the negative leg of your LED.
- The Rest: Connect the positive leg of the LED to a 330Ω resistor, and then connect that resistor to your Power Supply (e.g., 5V or 9V).






