Marcel Birthelmer wrote: >> A = - (1-j*omega* Rv*C)/(1+j*omega*Rv*C) where omega is 2*pi*f >>The phase shift will be: >>Fi = -2*tan^ -1 (omega*Rv*C) - 180 >>so the phase shift will be between -180 to -360 degree >> >>best regards, >>Vasile >> >> > > > Vasile, > thanks for your answer. After some equation-crunching (also with the > help of Olin), I came up with the same Gain equation you have. However, > I'm afraid I don't understand how to get the phase shift from that. I > assumed that simply finding the argument (arctan(Im/Re)) would be > enough, but that gives me a range from 0 to 360 EDIT: 0 to Pi. 180. I'm an idiot. which obviously isn't > right. (I'm using Maple 9 for the actual evaluation and plotting with > different frequencies and resistor values.) > Any ideas? > - Marcel -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist