It's not a dumb question, but is highly relevant to LEDs. Stay away from anything below 1000 ohms. I use 5100-6800 ohms for headlights on steamers, and 22000-27000 for markers. It takes at least 3300 to see the difference with 1000. Between 20000 and 50000 you won't notice hardly any change.
If you like them really bright, like a diesel headlight, then 1000 might be OK. And I know a number of diesel people who use that, but it makes for extremely bright lights. Incidentally, brown black yellow is 100,000 ohms.
On Mon, Sep 18, 2023 at 12:07?PM Dennis Beutler <mmartian74@...> wrote:
Hi I m new to some of this . What ? iam trying to do ?is to dim leds down ?.I have tried several different types of resistors like 470, ?680 , ?750 and 1k ohms and can¡¯t ?dim them .? I used resistor calculators online ?and still haven¡¯t gotten the hang of it ?at what point do they start ?to dim down what I have now is a color code of ?first line is brown ?black ?and yellow the last one is gold ?. ? What ohms would this be ? This dims it down to where I need to be.? Sorry for making this a dumb question , I have never did any calculations for resistors. thanks?
