Hi
Could someone give me a hand with calculating a biasing resistor please?
I want to use a transistor as a switch to drive an LED, as in the attached circuit diagram. I have used various ways of calculating this, some which work, but I'd like to know the correct method to approach this calculation.
Thanks![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
![DSC01358 (Large).JPG DSC01358 (Large).JPG](https://www.electro-tech-online.com/data/attachments/44/44334-b5ebe748c27a4277aee4f3984703b394.jpg)
Could someone give me a hand with calculating a biasing resistor please?
I want to use a transistor as a switch to drive an LED, as in the attached circuit diagram. I have used various ways of calculating this, some which work, but I'd like to know the correct method to approach this calculation.
Thanks
![DSC01358 (Large).JPG DSC01358 (Large).JPG](https://www.electro-tech-online.com/data/attachments/44/44334-b5ebe748c27a4277aee4f3984703b394.jpg)