This LED PWM calculator is designed to help you smoothly dim LEDs with PWM, tackling the problem of quantisation in linear brightness space.
Not sure what something does? Hover over its label to see a description. If you'd like to learn more, check out the accompanying blog post.
| Perceptual resolution (lower 50%) | |
|---|---|
| Perceptual resolution (upper 50%) | |
| Minimum perceptual brightness | |
| Contrast ratio | |
| Minimum pulse time | |
| Equivalent frequency of shortest pulse | |
| Required driver tr / tf | |
| Rise/fall propagation distance | |
| Required driver dV/dt | |
| Required driver dI/dt | |
| Equivalent output impedance | |
| Frame period | |
| PWM cycle period | |
| PWM cycles per frame | |
| Temporal dither pattern period | |
| Temporal dither ripple frequency range | |
| IEEE1789 flicker risk[img] | |
| IEEE1789 PSE risk | |
| Absolute max temporal dither | |
| Red wavelength estimate | |
| Green wavelength estimate | |
| Blue wavelength estimate | |
| White chromaticity | |
| Relative emitter luminance | |
| Relative intensity correction for D65 |