How Do You Hook Up A Single LED To A Solar Panel Without Dimming
I am just a newbie when it comes to leds. What I have is a max 4vdc solar panel. I have shined every light I have on this panel and seen a max output of 3.96vdc. I would like it to power a single red led with a 1.7 forward voltage and 20mA. I would like to protect my led because. I have both indoor and outdoor uses for this application. I figure just a simple resistor will only limit the extreme side of the input. But once I take it indoors there will be too much resistance on the led to produce any light. I need an alternative. I understand that once the solar panel output is dropped a little below the 1.7v loose the light from the led and this is exactly what I want. To sum up, I need a way to light an led using a solar panel from low and high light sources with out damaging the led. Any help would be great.