A welding power supply, comprising: control circuitry comprising processing circuitry and memory; one or more tangible, non-transitory machine-readable media having encoded thereon processor-executable instructions, the instructions comprising: instructions to detect a setting of a root mean square voltage, to detect a setting of a RMS current, or any combination thereof; characterized in that the instructions further comprising: instructions to calculate an average voltage command based on the setting of the RMS voltage by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, to calculate an average current command based on the setting of the RMS current by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, or any combination thereof; and instructions to control the output voltage using the average voltage command to produce an output the same as the RMS voltage setting, to control the output current using the average current command to produce an output the same as the RMS current setting, or any combination thereof. control circuitry comprising processing circuitry and memory; one or more tangible, non-transitory machine-readable media having encoded thereon processor-executable instructions, the instructions comprising: instructions to detect a setting of a root mean square voltage, to detect a setting of a RMS current, or any combination thereof; characterized in that the instructions further comprising: instructions to calculate an average voltage command based on the setting of the RMS voltage by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, to calculate an average current command based on the setting of the RMS current by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, or any combination thereof; and instructions to control the output voltage using the average voltage command to produce an output the same as the RMS voltage setting, to control the output current using the average current command to produce an output the same as the RMS current setting, or any combination thereof. instructions to detect a setting of a root mean square voltage, to detect a setting of a RMS current, or any combination thereof; characterized in that the instructions further comprising: instructions to calculate an average voltage command based on the setting of the RMS voltage by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, to calculate an average current command based on the setting of the RMS current by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, or any combination thereof; and instructions to control the output voltage using the average voltage command to produce an output the same as the RMS voltage setting, to control the output current using the average current command to produce an output the same as the RMS current setting, or any combination thereof. instructions to calculate an average voltage command based on the setting of the RMS voltage by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, to calculate an average current command based on the setting of the RMS current by using an empirical estimate of the relationship between average and RMS values, or by using a formula derived empirically by using a best fit curve, or by using a lookup table based on empirical measurements or calculations from a simulation, or any combination thereof; and instructions to control the output voltage using the average voltage command to produce an output the same as the RMS voltage setting, to control the output current using the average current command to produce an output the same as the RMS current setting, or any combination thereof.