Linked Questions

2
votes
3answers
417 views

LEDs in parallel [duplicate]

If I have 4 identical* LEDs wired in parallel to a single resistor so that the overall current available is 30 mA, do I still run the risk of premature burnout? The LEDs peak forward current is 30 mA. ...
10
votes
3answers
619 views

Reducing number of resistors

I have question about reducing number of resistors ... Well, it will be better if I show you the schematics. This is my first scheme: That's what I have. The thing is, I know what only one LED will ...
4
votes
2answers
2k views

Single resistor powering multiple LEDs in parallel where current through resistor is lower than max allowed current for an individual LED

While writing an answer about using multiple diodes connected to a single resistor, I stumbled upon a case about which I haven't read a lot: What happens when we set the resistor so that it sets the ...
3
votes
3answers
911 views

3 RGB-LED with only 3 resistors

I have 3 RGB LEDs with common anode, a shift register and a microcontroller. Currently I have connected a series resistor for each cathode of the RGB LED, so there are 9 resistors in sum. I wondered ...
0
votes
2answers
4k views

wiring LED's in parallel - need series resistor?

I would like to confirm something I have inferred through my looking into LED wiring and also have a couple questions answered. For the sake of the examples below assume the source voltage is 5v; my ...
1
vote
2answers
2k views

Digital Clock Circuit

I am making a solid wood clock using minimal components. So far, I thought of using 21 LEDs to make 7 segment displays (3 LEDs for each segment (overall 63 LEDs for the displays)), 6 LEDs for the 1 in ...
1
vote
3answers
863 views

Substituting multiple resistors with one [duplicate]

Hi am a beginner in Electronics and I have been working with a LED project. I have a requirement where i need to connect 6 LED's in a way shown in the below diagram. Forward voltage of these LED's are ...
1
vote
2answers
580 views

Resistors with arduino

simulate this circuit – Schematic created using CircuitLab I'm using Arduino Mega Pro 5V. Pins use a max of 40-50mA. I'm connecting 3 RGB super bright 5mm LEDs. Currently wired in parallel ...
0
votes
1answer
91 views

Total current drop when using leds in parallel [closed]

I'm making an led light for video shoot purpose. It's an array of 20, 5w led in parallel. The problem I'm encountering is, current drops when I'm connecting them in parallel. My power supply is ...