In high voltage power supplies the output stage is capacitive by nature, which results in stored energy. During an arc discharge, the stored energy inside the power supply is quickly dispersed through an internal limiting resistance and carries high peak currents through the load.The high energy pulse magnitude (EMT pulse) that occurs during an arc can damage the high voltage power supply and the load, as well as potentially disrupt sensitive control and microcontroller circuitry.Our high voltage power supplies feature arc current limiting and arc sensing circuitry to protect the load from arcing damage.