Led Calculator

[IotaYodi]

Thought some of you might like this.
http://ledcalculator.net/

[altrez]

Thought some of you might like this.
http://ledcalculator.net/

Thank you for the post. Always good to have..

-Altrez

[Pirate88179]

I just tried it with 400 leds running on 1.5 volts and it gave me an error.  I guess it does not take the JT circuit into consideration.  It said I needed to increase my input voltage.

Bill

[gyulasun]

Bill,

I do not think it considers any active circuit, no. Only resistor, battery voltage and voltage drop for the different LEDs, that is all.
It probably uses simple Ohms law and was taught for simple error messages like you got.

Gyula

[Pirate88179]

Bill,

I do not think it considers any active circuit, no. Only resistor, battery voltage and voltage drop for the different LEDs, that is all.
It probably uses simple Ohms law and was taught for simple error messages like you got.

Gyula

Yes, I am sure you are right about this. This is a good tool to prevent folks from burning out leds which I used to do back in the beginning before I ran across the JT circuits.  I hooked an led to a nine volt battery, no resistor.  It was really really bright before it started to smell funny and then.......gone.  I had no idea what I was doing at that time.

Bill