One problem I noticed is that in many LED lighting applications, LEDs are connected in series in sets of several. If one of them burns, do they all go out? Is it possible to cancel this LED and keep the others on?
There are excitation circuits in some LED lamps that automatically cancel an LED, causing the current to pass directly (bypass) when it burns and thus keep the others in the same series on. However, if this does not happen, we can detect the LED that causes the problem (which opens) and connect a zener in parallel with it, usually from 2.1 to 2.7 V so that it simulates an LED. In some cases, you can try to connect a common LED with similar characteristics in parallel, but there is no guarantee that it will shine as desired.
