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Results tagged with led
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user 184863
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.
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Power capacitor needed with high current LED
The LED panel doesn't need a capacitor. Your MCU does. … In fact, adding capacitance to the LED panel will make the inrush surge of the LED panel worse, not better, because the first thing that happens is that the capacitor must charge from zero to 12V. …
- 798
2
votes
Accepted
Use LEDs to indicate voltage
These should give enough margin to work with different colours of LED, not just red (which tends to have the lowest forward voltage). … Note that since the full voltage is still applied to the first LED's limiting resistor, that will be the brightest one even when a higher LED is in fact lit. …
- 798