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ihggin
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Homework Statement
Use the following phototransistor (http://www.vishay.com/docs/81532/bpw96.pdf) to design a circuit that gives an output voltage of 8 V when irradiance is 0.05 mW/cm^2 and 1 V when irradiance is 1 mW/cm^2 (both at wavelength 950 nm).
Homework Equations
The Attempt at a Solution
I'm assuming that Fig. 5 on page 421 of the spec sheet is useful? My best guess would be to trace the desired voltage onto the appropriate irradiance curve and then find the matching collector current? I haven't had any background with transistors and am pretty uncertain as to what kind of elements the circuit should even contain (op amps?, resistors?). A conceptual explanation of what is going on would be much appreciated. (Btw I searched the web for explanations of phototransistors, etc. but nothing made too much sense to me.)