![]() The resistor will become hot and we can see that with a thermal imaging camera. The electrons are going to collide and this will generate heat. The resistor is going to make it harder for electrons to pass through. That’s what we’ll be covering in detail in this article. So how do we connect the LED’s, how do we reduce the current to keep the LED’s safe and how long will a battery power our circuit for. When we look at an LED being destroyed under a microscope, we can see the tiny wire exploding inside. The LED has a tiny wire inside, this can only handle a certain amount of current passing through it. ![]() But, if we exceed it’s voltage and current limit it will instantly be destroyed. If we pass a current through one, it produces light. These are LED’s, or light emitting diode. Scroll to the bottom to watch the YouTube tutorial. ![]() How to calculate resistor size, how to protect LED, how long will a battery power a circuit, how to calculate resistor power rating, how to connect LED and much more.
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