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Results tagged with led
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user 139908
An LED is a light-emitting diode. Lighting an LED is considered the "Hello world" of a circuit design, and it can be as simple as using a series resistor, or it can get more complicated, involving PWM and multiplexing.
3
votes
Driver Circuit for 10W LED
This is the same schematic.
Which part do you not understand?
simulate this circuit – Schematic created using CircuitLab
- 2,915
1
vote
Calculate RGB color ratio for a color space given a white point?
Turn on only the red LED to around 1/2 brightness.
Turn on the blue LED and adjust the brightness of the blue LED until you see the purple color in the gray circle. … Turn on the green LED and adjust the brightness of the green LED until you see the desired white light. …
- 2,915
4
votes
How can I light up 3 LEDs in sequence but only one at a time?
here is a mechanical way
just drag the lead across, contacting each LED in turn
not meant as an answer (it is the only way to include a schematic)
simulate this circuit – Schematic created using … Use a ball-bearing running on two wire rails - one segmented with each LED connected to a segment - to switch the LEDs in sequence. …
- 2,915
2
votes
1
vote
Voltage divider/reduction with no current draw
if you can replace the switch ...
simulate this circuit – Schematic created using CircuitLab
- 2,915
0
votes
Measured voltage and current different from the calculated value
(you can reverse the input/output if your language uses right to left writing)
It makes it easier to visualize the voltage levels in the circuit and makes it more difficult to make errors such as an LED …
- 2,915