In the continuous quest to familiarize myself with electronic circuits, I have come across 3 terms that I'd appreciate some help to clear in my head. So, Voltage drop, Forward voltage and Forward Voltage drop. Are we talking about the same thing here?
Here's an example, trying to figure out what resistor I should use in the circuit:
Say I am using a 9V battery to power a circuit with a LED that in the datasheet says that the Forward voltage is 2V. The led has the typical Forward current of 20mA.
So, R = V(9-2) / 20mA = 7V / 20mA = 350 Ohms
Is the above correct? If so, what is the voltage drop about, and furthermore, what is the Forward voltage drop?
Thanks!
John
Here's an example, trying to figure out what resistor I should use in the circuit:
Say I am using a 9V battery to power a circuit with a LED that in the datasheet says that the Forward voltage is 2V. The led has the typical Forward current of 20mA.
So, R = V(9-2) / 20mA = 7V / 20mA = 350 Ohms
Is the above correct? If so, what is the voltage drop about, and furthermore, what is the Forward voltage drop?
Thanks!
John