Eternal led 'on' ?

[marseye]

https://www.lightrabbit.co.uk/cable-capacitance-problem-led-lamps

But food for thought, as I said....

[ricards]

Hi marseye,

The big capacitor serves as your power source, That high Capacitance can really power a Led at it's dimmest for days.., but that doesn't mean It's eternal, It's going to be discharged sooner or later.

If your led goes brighter If you ground 1 Lead, you probably are in an area where there's good electromagnetic activity. your big capacitor is being charged by it and If you would look at the way capacitor's are constructed, they are really like pancake coils extruded. If this is the case and the electromagnetic energy your capacitor gets is higher or equal than that Led takes, congratulations you may have had an eternal LED.

But It might not work in other locations.

just a theory though..

[marseye]

I understand perfectly. 'Eternal' was just provocative (with a question mark).

It's just proof that diodes can be active on such few energy levels... They won't fire from an original undervoltage. But it seems they keep conducting after having been fired correctly if a capacitance is still present.

I just found that was interesting. Not sure about what to do with that. But it's now in a corner of my head. There may be an application to it. One never knows.