Example: circuit determines the LED has a forward voltage of 1.8v and you have 99v, 10mA set, it will do this: 99v-1.8v/0.01A and come up with 9720 ohms resistor. (10k would be the nearest common ...

The LED segments of the display require current-limiting resistors when powered from a 5 V logic pin. The value of the resistor is typically between 330 and 470 ohms. And, driver transistors are ...

If our example resistor ended in gold (orange, white, black, gold), its 39 Ohms value could be five percent higher or lower. For a possible minimum of 37.05 or a maximum of 40.95.

Measuring an inductor is not something that most multi-meters can do. You usually need a high precision resistor (1% or better) in series with the inductor, a function generator to put a signal thr… ...

So, we put the resistor (represented by the squiggly line) in the circuit too. We can put this resistor either before or after the LED because it will have the same limiting affect at either location.

Here is a simple Arduino Camping Light project. ... Arduino Camping LED Light. February 12, 2014 by T.K. Hareendran ... (and ofcourse the LED type) is not very critical. If you want to use a bi-polar ...