Resistor values calculator for common widely used circuits. * Get a specifier resistance using 2 parallel resistors; * Get a specifier resistance using 2 series resistors; * Divider (attenuator); * Ratio of 2 resistors; * Inverting Amplifier; * Non-Inverting Amplifier; * Fully Differential Amplifier; * Difference Amplifier; * Feedback resistor Divider;