Patent ID: 9737950
Date: 2017-08-22
CPC Classifications: B23K,H02M

Claim:
1. A system comprising: power conversion circuitry comprising one or more power semiconductor switches, wherein the power conversion circuitry is configured to receive power from a primary source and to switch the one or more power semiconductor switches between an ON configuration and an OFF configuration to convert the received power to a welding output; and a pulse width modulated (PWM) digital controller coupled to the power conversion circuitry and configured to sample a current or voltage waveform during a period of the current or voltage waveform at a sample time when an actual current or voltage output waveform value is approximately equal to an average value of the current or voltage waveform that is determined based at least in part on data obtained during a previous period of the current or voltage waveform, and to communicate sampled current or voltage values to a weld controller.