Saturday 17 December 2016

diodes - Red LED light up at 1.7V with resistor?



Voltage drop for red LED is around 1.7V, but in my experiment, which consist of a voltage supply connected to a 330ohm resistor and a red LED all in series, the min voltage supply needed for LED to light up is 1.7V? by using Ohm's law the current is 0 ? but the LED light up ?


(I'm supposed to find the min voltage (and current) needed to light up the LED)




-

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

arduino - Can I use TI's cc2541 BLE as micro controller to perform operations/ processing instead of ATmega328P AU to save cost?

I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...