remember the #47 light you used in prelab 1? well, th brightness is correct, but

Question

remember the #47 light you used in prelab 1? well, th brightness is correct, but it reaches its full output much too quickl; your eyes are sensitive at 2:00 a.m., arent they? add a capacitor accross the light bulb to smooth things out. select its value such that it reaches 63% of its total brightness in five seconds, and use the original circuit you designed in prelab 1. what shold the voltage rating of this capacitor be and why? remember, the #47 bulb drops 6.3 V @ 150 mA. Hint: make sure you take into account the equivalent resistance seen by the bulb when computing the time constant. draw the entire circuit.

Explanation / Answer

5 = 1/r/C 5 = 150*10^-3/6.3/C C = 0.0047 F

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