The EHT Nanosecond Pulser Inductive Adders (NSP-IA) are designed to drive low-impedance loads to high voltage with fast rise times. EHT originally developed this class of high-power pulse generator for the Office of Naval Research to drive nonlinear transmission lines (NLTLs) for high-power microwave production. Today, these pulsers have use in a wide range of applications including accelerator physics, pulsed power research, water decontamination, plasma control, pulsed radar systems, and high-power microwave production.
Each NSP-IA offers the user independent control of the output voltage, pulse width, and pulse repetition frequency. The input trigger is fiber-optically isolated from the user's control system with the EHT fiber products, which prevents ground loops and reduces the risk of trigger error. A status fiber output tells the user's control system that the inductive adder is ready for a user trigger. The inductive adders ship with an external DC power supply that allows the user to control the output voltage and average power of the pulser.
To address corona and heating issues in the cable for the highest voltage inductive adders, EHT developed a custom SF6 filled cable that safely enables high voltage operation at high average power.
|One Module||Two Modules||Three Modules|
|Peak Output Voltage||12 kV||24 kV||36 kV|
|Rise Time into 50 Ω Impedance||8 ns||8 ns||10 ns|
|Min Load Impedance||16.7 Ω||33.3 Ω||50 Ω|
|Rise Time into Min Load Impedance||10 ns||10 ns||10 ns|
|Min Pulse Width to Full Voltage||30 ns||30 ns||30 ns|
|Max Pulse Width||120 ns||120 ns||120 ns|
|Max Pulse Repetition Frequency (Continuous)||25 kHz||25 kHz||25 kHz|
|Max Pulse Repetition Frequency (Burst)||50 kHz||50 kHz||50 kHz|
|Physical Dimensions||13.5" x 17.7" x 18"||25" x 17.7" x 18"||36.4" x 17.7" x 18"|
|Weight||115 lbs||195 lbs||270 lbs|
Additional modules can be added in series and/or parallel to generate higher voltages and drive lower impedance loads.