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FaradayFF:
I need to point out that an NTC thermister is not a panacea for LED bulb inrush.
These devices are thermal in nature and have thermal time constants. For something like a CL-70 it may take a minute for it to get back to close to its room temperature value.
I think it could be quite advantageous for increasing the number of LEDs on a single snap switch. But on a dimmer possibly only a small increase in the number of LEDs.
The problem with dimmers is the short time constant for overload of the switching device, SCR or whatever. In a power outage there may be very short duration losses of voltage. These can be short enough that the NTC doesn't change to high resistance before voltage reappears, and high inrush occurs.
Note: a snap switch does not open on a power outage. It may see a high inrush current on return of power, but not while switching.
A better solution is a series resistor and a time delay relay. This can provide instantaneous recovery to its high impedance state. But this is more complex, more costly, bigger, and probably a higher probability of failure.
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