LED Current Limit

I teach an introductory electronics class and previously used Circuits.io to simulate a current limiting circuit for an LED (https://www.tinkercad.com/things/gzGDL3dtG1f-lab-3-measuring-vir/editel?sharecode=Q6xTv5HOCxzGQAFmsBv1P7zejOy9MlFYBgwoLFumkBk=). It's a simple series Resistor-LED-VoltageSource circuit in which I have the students vary the resistance until the LED "blows". We then use Ohm's law to calculate the current which should be around 20mA for a typical LED. In Circuits.io, the simulation worked as expected. However, in Tinkercad Circuits, the current required to "blow" the LED is 120 mA. Am I doing something wrong or is there a bug in the simulator?

Also, Circuits.io had a "schematic view" option. Are there any plans to add option to Tinkercad Circuits?


1 comment

Please sign in to leave a comment.