QuietPulse™ is activated by changing the wave shape during DC pulse welding, creating a slower, more fluid transition between the background and peak amperage to create the least possible audible noise.
Maxstar 210, 280, 280 Multiprocess, 400 and 800 Series machines manufactured starting with serial number ND040985L and the new Dynasty 210, 300 and 300 Multiprocess machines have QuietPulse™. Any Maxstar machines manufactured prior to the serial number ND040985L can purchase the QuietPulse™ Expansion Memory Card (
PN 301790).