Engineering Design Utilities
Tool  Summary 
Transfer Function  The transfer function is simulated frequency analysis and transient analysis on graphs, showing Bode diagram, Nyquist diagram, Impulse response and Step response. 
Feedback tool  This tool determine the transfer function from a feedback system. The transfer function is simulated frequency analysis and transient analysis on graphs, showing Bode diagram, Nyquist diagram, Impulse response and Step response. 
OpAmp tool  This tool determine the transfer function from a inverting / noninverting amplifier circuit. The transfer function is simulated frequency analysis and transient analysis on graphs, showing Bode diagram, Nyquist diagram, Impulse response and Step response. 
Resistor tool  This tool is to find the optimum resistors from the resistor sequence. 
Filter tool

This tool design and analysis analog filters. 
Comparator hysteresis tool  This tool design a comparator circuit with hysteresis that find the optimum resistors for hysteresis circuit from the resistor sequence. 
Math tool  This tool solve an equation of higher degree, simultaneous equations, partial fraction decomposition. Scientific Calculator 