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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.
0V0A70°F Room temp
5v0.182a70°F Room Temp
For this test we applied DC in 1V steps and measured current and temperature
10V0.237A71°F
15V0.269A86°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…
20V0.299A95°F
25V0.328A112°F
Filament between internal posts fully lit showing an orange color. The bulb is physically hot, but no real light being emitted.
40V0.406A132°F
45V0.430A151°F
As voltage is increased a fair amount of white light being emitted. High amount of light being emitted at 45V.
50V0.453V148°F
55V0.475A157°F
Now the light being emitted is strong enough to hurt eyes without sunglass protection.
60V0.497A158°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: