 Welcome to Transfer Functions, the RL high-pass filter. The development of a transfer function for a circuit facilitates the determination of circuit response to frequency. The transfer function can easily be entered into a spreadsheet, and the results graphed. Here is the RL circuit, and shown here is the transfer function. Solve for each impedance and substitute into the transfer function. Create a spreadsheet. Using the transfer function, calculate the V out for a wide range of frequencies. Graph the V out with respect to frequency. Let's simulate the circuit in electronic workbench and use the Bode plot feature to analyze the frequency response of the circuit. Both graphs show the corner frequency to be 15.9 kHz. In review, the development of a transfer function for a circuit facilitates the determination of circuit response to frequency. The transfer function can easily be entered into a spreadsheet, and the results graphed. You have completed this activity, Transfer Functions, the RL high-pass filter.