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DIY CNC Plasma Does It Need a Torch Height Controller

2 Arc Voltage Control Methods It can work through traditional set arc voltage. Partial Pressure Ratio External 501 non-isolated partial pressure. Xpthc-4h plasma torch height controller thc kit for cnc plasma cutting machine technical parameters operating voltage ac24v+10%, 50hz/60hz or dc24v±20% compatible motor dc24v motor motor drive mode pwm output current 0.2a-1.8a output power 40w working temperature of height controller -10 to 60â?