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Marx Generator


Part Number: MG24-20C-2700PF-PFN

APELC’s MG24-20C-270PF-PFN Marx generator features a 24-stage, pulse-forming network (PFN) designed to source higher impedance microwave tubes. It includes a “by-pass” copper sulfate water resistor in the design for impedance matching, and to accommodate load impedances from 100 Ω to 200 Ω. This system is unique as its integrated PFN delivers a rectangular pulse to the load.The generator features a second ‘dummy-load’ port to facilitate a wide range of real-load impedances for both matching and waveform verification.

The system comes standard with several diagnostics, including a voltage monitor, a Rogowski monitor, and a B-dot monitor. The system also includes an internal safety dump and an optional side-mounted high voltage trigger unit.


  • Maximum open-circuit voltage: 840 kV
  • Maximum peak voltage into matched load: 420 kV
  • FWHM: 260 ns
  • Ripple: ± 10%
  • Voltage rise time: 70 ns (10-90%)
  • Energy per pulse: 20 J (at 8 kV charge) – 800 J (at 35 kV charge)
  • Maximum repetition rate: 30 Hz
  • Maximum number of pulses in burst: 10


The following items are included with the MG24-20C-2700PF-PFN:

  • PFN-Marx generator
  • High voltage charge cable with quick connections
  • High voltage trigger cable with quick connections
  • Air lines
  • Resistive dummy load with Current Viewing Resistor (CVR)
  • Resistive by-pass load with CVR
  • D-dot probe with BNC port
  • Rogowski probe with BNC port
  • Pneumatic dump circuit with resistive load
  • 1 additional PFN stage

The following items are optional:

  • Integrated high voltage trigger unit mounted to side of the Marx generator
  • Power and control rack – smart or manual

The following items are required for proper implementation of the MG24-20C-2700PF-PFN:

  • Constant-current, high-voltage power supply
  • High-voltage trigger unit
  • Pressurized breathable dry air source
  • In-line charge resistor
Parameter Description Value Unit
Verect Erected voltage (min – max) 120 – 800 kV
N Number of Marx Generator stages 24
Vch Charge voltage (min – max) 5 – 30 kV
ZPFN Stage PFN impedance (approximate) 4 Ohm
Cbasis Basis capacitor 2700 pF
Zsource Impedance of the Marx generator 100 Ohm
Zload Typical load impedance1 100 – 200 Ohm
TPW Approximate pulse width (3 dB points) 260 ns
Trise Approximate rise time (10 – 90%) 70 ns
Epulse Energy per pulse at min charge

Energy per pulse at max charge





Pmax Maximum peak power 1.78 GW
TRR Maximum pulse repetition rate 30 Hz
NPB Maximum number of pulses per burst 10


APELC’s selection of add-on features for high-voltage components are designed to increase safety and usability.


Rugged high-voltage quick disconnect cable connectors for voltages up to 700 kV.


Integrated high-speed current diagnostics in high-voltage quick disconnects.


Software to increase user safety and reduce time spent in testing.


Termination and monitoring capability for a high-voltage, high-power pulse without radiating equipment.


Providing the trigger pulse to a Marx Generator through a pulse forming circuit.


Fully integrated power and control units to deliver a turnkey package for our pulsed power systems.


For more information or to discuss a custom or turnkey system, complete the form below and we will contact you within 24 hours.

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