... and high power from 900-2400W Technical Parameter 1,Separate excitaiton type PCB Type: HNE-FP-S(F means ... , Example: HNE-40100-S, This model of PCB is separatly-excited generator, applicable to transducer of ... protection, power adjustable; 2, Auto excitaiton type PCB Type HNE-FP-A(F means frequency, P ... Example: HNE-40100-A, This model of PCB is auto-excited PCB, applicable to transducer of 40K, 100W.) ...