@Super,
The concept is:
- In series, you can only have around 11-12 (standard) LEDs turning on with a 9V battery. With any more, they are probably not going to turn on at all. With high-bright LEDs, you won't even get 4 lighting up in series. Even if these LEDs in series do light up in series, they will be so dark that you might as well not have them.
When in series you can have just one resistor with entire chain.
- In parallel, you MUST have one resistor for each LED. All the LEDs will be the same brightness (assuming the resistors and LEDs are all the same) and will actually light up. You can have as many LEDs you want in parallel. The more you have, the faster your battery will be depleted. You can control the brightness of each LED individually by changing the resistor for each. A larger resistor will make the paired LED darker and a smaller resistor will make the paired LED brighter. Don't make the resistors too small though! A good resistance is roughly 500 Ohms to 1k Ohms for a nice bright LED (assuming standard LEDs).
-plarnold
The concept is:
- In series, you can only have around 11-12 (standard) LEDs turning on with a 9V battery. With any more, they are probably not going to turn on at all. With high-bright LEDs, you won't even get 4 lighting up in series. Even if these LEDs in series do light up in series, they will be so dark that you might as well not have them.
When in series you can have just one resistor with entire chain.
- In parallel, you MUST have one resistor for each LED. All the LEDs will be the same brightness (assuming the resistors and LEDs are all the same) and will actually light up. You can have as many LEDs you want in parallel. The more you have, the faster your battery will be depleted. You can control the brightness of each LED individually by changing the resistor for each. A larger resistor will make the paired LED darker and a smaller resistor will make the paired LED brighter. Don't make the resistors too small though! A good resistance is roughly 500 Ohms to 1k Ohms for a nice bright LED (assuming standard LEDs).
-plarnold
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