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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A lamp's intensity stays constant when monitored by an optotransistor controlled feedback loop. When the voltage drops, the lamp's output also drops, and op to transistor Q1 draws less current. As a result, a power transistor conducts more heavily and charges a capacitor more rapidly [24]. The capacitor voltage controls the lamp voltage directly. A block diagram of the system is shown in Figure E2.7. Find the closed-loop transfer function, I(s)!R(s) where I{s) is the lamp intensity, and R(s) is the command or desired level of light.

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