# Incandescent Bulb Test Our circuit consists of two 30V DC adjustable power supplies connected in series with an 100W incandescent bulb.

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Incandescent Bulb Test Our circuit consists of two 30V DC adjustable power supplies connected in series with an 100W incandescent bulb.

0V 0A 70°F Room temp 5v 0.182a 70°F Room Temp For this test we applied DC in 1V steps and measured current and temperature

10V 0.237A 71°F 15V 0.269A 86°F As voltage and current goes up Filament beginning to glow slight red, red glow growing in intensity, red glow eventually turning to a orange glow…

20V 0.299A 95°F 25V 0.328A 112°F Filament between internal posts fully lit showing an orange color. The bulb is physically hot, but no real light being emitted.

30V 0.354A 125°F 35V 0.381A 128°F orange glow of filament turning to more white light

40V 0.406A 132°F 45V 0.430A 151°F As voltage is increased a fair amount of white light being emitted. High amount of light being emitted at 45V.

50V 0.453V 148°F 55V 0.475A 157°F Now the light being emitted is strong enough to hurt eyes without sunglass protection.

60V 0.497A 158°F Bulb to hot to touch at our maximum applied voltage of 60VDC Extra-Rare: 125F (52C) Rare: 135F (57C) Medium-Rare: 145F (63C) Medium: 160F (71C) Well-Done: 170F (77C) Notice how high the temperatures is. For comparison, here are the internal temperatures recommended for cooking a steak:

This is our measured results for the experiment.

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