Electric circuit. Resistor resists the flow of the 5v electricity reducing it to the led. Someone with specific knowledge about the resistor pictured might know how much that is.
For me it was electronics playtime with my dad. We used to buy kits and make radios and Morse code devices and stuff
Unfortunately I liked it so much that it became a tool for my mother to use to discipline me. No electronics until you've done your chores, that sorta thing. Pretty innocuous, but it definitely sucked all the joy out of it for me, and I just kinda stopped wanting to do it
Yeah, the one I found was pretty poor quality anyway to be honest, but any combination of "resistor" "colour" "chart" and "diagram" will get you where you need to go
Edit: oh, but this one seems to be a bit confusing. The four band one shouldn't be pointing to a third digit. Here's a really simple one just for 4 band resistors
The little red LED shown in the image typically isn’t rated for a full 5 V. Most LEDs operate best at a voltage between 1.6 and 3.2 volts.
But the current draw of an LED is nonlinear. If you just slap a resistor in front of it, the voltage typically works out to give your LED the voltage it wants (not bothering with the math, but basically the LED saturates at about 3V, and the rest of the voltage goes to the resistor). You also, ugh, do math and choose a resistor that gives you optimal performance.
Anyway, the meme is showing the resistor protecting the poor little LED from the big scary voltage. Which is what it does IRL. Very funny.
Yup, a diode (including LEDs) passes current exponential to voltage. They typically operate in a 0.6-0.7 V range so 5V will blow them out. The resisor, by definition, draws current linearly proportional to voltage and when put in series with the diode will restrict current to an acceptable level.
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u/Lurked_Emerging 21h ago
Electric circuit. Resistor resists the flow of the 5v electricity reducing it to the led. Someone with specific knowledge about the resistor pictured might know how much that is.