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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...