How about two LEDs? One which gets dimmer and one which gets brighter as the charge progresses?Therefore you won't be able to tell exactly how charged the battery is, even if you apply exponentially more light.
The problem with LEDs is that it's either too translucid to let the ambient light reflect to you, or (the most common is that) the LED is that it's a bit opaque, so you don't see well "how dark" it is.How about two LEDs? One which gets dimmer and one which gets brighter as the charge progresses?
More likely due to the technology available when brake-lights were invented - either a pressure switch on the brake pipes or a microswitch on the pedal.I think that's one of the reasons why braking lights (of vehicles) are only on or off (also for simplicity and cost-effectiveness)...
Same problem - when it's flashing quickly (above 10Hz) is it possible to tell just how quickly?Just thought about that with only 1 LED you can change it's frequency of blinking to let you know how charged the battery is. So maybe 40 Hz could be fully charged and 1 Hz could be fully discharged. It's a suggestion.
I can tell coarsely few hertz like 1 to 7, and then I can tell the difference between 10, 20, 30 and 40 Hz. With 2 minutes of training you can do it too.Same problem - when it's flashing quickly (above 10Hz) is it possible to tell just how quickly?
You could use the two LEDs in a bicolour LED - say red and green - then the problem becomes how to tell exactly how yellow it is.
What the intent was to say was:When power came back on the current would win o flow. Keyoard failure! oa o.
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