With pulsed spray transfer, current changes from DCEP to AC each cycle.

With pulsed spray transfer, current changes from DCEP to AC each cycle.

• A. True
• B. False
• C. It changes from AC to DC
• D. It remains DCEP

Answer: (B)

Pulsed spray transfer uses a unidirectional current that is modulated in amplitude, not a reversal of polarity. In this mode, the power source cycles between a high peak current (enabling spray transfer) and a lower background current to control heat, while the electrode polarity stays the same—usually DCEP (electrode positive). Switching to AC each cycle would reverse the polarity and alter the transfer mechanism, which isn’t how pulsed spray is implemented. So the statement is not correct because the current is pulsed in magnitude but keeps the same polarity, not toggling to AC.

Pulsed spray transfer uses a unidirectional current that is modulated in amplitude, not a reversal of polarity. In this mode, the power source cycles between a high peak current (enabling spray transfer) and a lower background current to control heat, while the electrode polarity stays the same—usually DCEP (electrode positive). Switching to AC each cycle would reverse the polarity and alter the transfer mechanism, which isn’t how pulsed spray is implemented. So the statement is not correct because the current is pulsed in magnitude but keeps the same polarity, not toggling to AC.