ELEG 3214 Lecture Notes - Lecture 1: High-Pass Filter, Logarithmic Scale, Transfer Function
31 Aug 2016
School
Department
Course
Professor
Document Summary
Current travels from a higher potential to a lower potential. Current = (the change in voltage)/(total resistance)=(10-0)v/5kohms = 2ma. If v1 > v2 then i = (v1-v2)/r. If v2 > v1 then i = (v2-v1)/r (voltage divider circuit) The transfer function is the ratio of the output signal to the input signal. It is a response function, meaning it describes the response of the output based on the input. Transfer function = t(jw) scale are known as decibels. Converting a voltage transfer function to its logarithmic scale, ( ) involves. It is common to express response curves using a logarithmic scale. This is because the logarithmic scale allows for a greater range of independent variables to be displayed (in this case the frequency). The units for a log multiplying the log base 10 of the magnitude of the transfer function by 20. Which is why when adding them there is a 3db drop from the constant:
