Tagged Questions

3
votes
1answer
52 views

calculating resistance for LED strips to use as parking lamps and turn signals

I'm installing LED strips in my car's tail lamps to convert it from conventional bulbs to LEDs. I have a understanding of what I'm doing but not the complete knowledge to make the circuit work ...
6
votes
3answers
361 views

Why do diodes have a voltage drop?

Is resistance what makes a diode have a voltage drop? Or is it impedence? If it is electrical energy being converted to light, please tell me what this effect is called.
3
votes
2answers
4k views

5V to 3V, calculate resistor value (or use diode?)

I want to connect this dv motor to the 5V output of an Arduino board. Of course I need to get the 5V down to 3V in order for the motor to function correctly. I've read that I could use a diode with ...
12
votes
4answers
537 views

Simple Circuit Question

I've been playing around with an Arduino for a while now, and while I know just enough about simple circuits to get little projects up and running, I still don't know enough to figure out what's going ...