![NPN LED Driver - Why an extra resistor to ground at the Base? | Electronics Forum (Circuits, Projects and Microcontrollers) NPN LED Driver - Why an extra resistor to ground at the Base? | Electronics Forum (Circuits, Projects and Microcontrollers)](https://i.imgur.com/uiVisGR.jpg)
NPN LED Driver - Why an extra resistor to ground at the Base? | Electronics Forum (Circuits, Projects and Microcontrollers)
When a BJT is being used as a switch to turn on a LED, why does the LED not turn on when the base is short to the ground? - Quora
![The Bipolar Junction Transistor (BJT) as a Switch | Bipolar Junction Transistors | Electronics Textbook The Bipolar Junction Transistor (BJT) as a Switch | Bipolar Junction Transistors | Electronics Textbook](https://sub.allaboutcircuits.com/images/03078.png)
The Bipolar Junction Transistor (BJT) as a Switch | Bipolar Junction Transistors | Electronics Textbook
Using the linked LED circuit, do transistors (BJT, MOSFET, etc) really amplify currents/voltages, or do they just create a closed circuit which has an external voltage supply? - Quora
![What is a purpose of BJT in an LED driver circuit with MOSFET? - Electrical Engineering Stack Exchange What is a purpose of BJT in an LED driver circuit with MOSFET? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Rbahr.png)
What is a purpose of BJT in an LED driver circuit with MOSFET? - Electrical Engineering Stack Exchange
![transistors - High side or low side LED driver with NPN BJT? Which is better? - Electrical Engineering Stack Exchange transistors - High side or low side LED driver with NPN BJT? Which is better? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/tG8nQ.png)