How do I figure out the max voltage /amperage of this smol incandescent bulb from a flashlight? No markings… battery was 1.5v AAA. I was going to try slowly going up on bench supply. Trying to make a light source with it.
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1.5v would be safe, since that was its power source.
Current will be dependent on its resistance at any given moment, and isn’t something you have to worry about.
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The filament looks like a (nonlinear) resistor, so it will limit current by itself. Max voltage estimate 1.2-1.5V (alkaline or lithium consumer AAA), maybe 2.2V.
Similar bulb (screw base): cecindustries.com/products/minia
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