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MikeMl, I’m afraid that your simulation has a problem. Incandescent lamps are constant current devices. As the voltage goes up, the temperature of the filament goes up and so does the resistance. The issue is that he wants a gradual increase in brightness and without knowing the luminosity verses power dissipation curve for the lamp to be used, it cannot be predicted...
It means "brightening slowly", the opposite of dimming slowly.What does "bringing the lamp up slow mean"???
Actually, a lamp is even more complicated than that.