Hello everyone, I will be given one of the 4 circuits below. The components are in a SEALED box. MY objective is to determine which circuit I have and to meaure the values of R, C or L. At my disposal I have a signal function generator, a scope, 2 DMM's and a DC power supply. Here is what i know and I can Expoloit these but was looking for some additional tips from the pros. 1) Capicitor acts like open circuit to DC and short circuit to really high frequency. 2) Inductor acts like short circuit to DC and open circuit to high frequencies, The above 2 points should help me eliminate the 2 series circuits. Next, 3) I can determine if i have a capicitor or inductor by connecting the scope accross the signal generator and add a resistor in series with the box and connect channel 2 of the scope accross the resistor. (NOTE we are told R in the box will be large, so my added resistor (ie 10 ohms) should not affect readings very much) If output leads = cap if lags = inductor. 4) Now to find the impedance to get the actual values of the R and C or L. I can observe a lissaous pattern on the scope with the configuration in step 3. This will help me obtain the phase angle. (Question is, what frequency signal should i use to get an easy to read pattern?) V= IZ and i can ogtain I(max) with my resistor in series (ie VRmax/R) then take I and divide by the signal function generator Vmax. (question is what voltage should i use?) also Z = R + (Xc or XL) = Z(magnitude)<phase shift. Ok, thats all i got, any other tips you can suggest? Thank you very much.