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Marx Generator


Part Number: MG20-1C-100NF

The APELC MG20-1C-100NF was designed to be incorporated into the world’s first fully-integrated, compact, portable High Power Microwave (HPM) source developed in a collaboration with Texas Tech University. Applications include HPM and high-voltage insulation studies.

Initially used to directly source a virtual cathode vacuum diode, the generator produced 2 – 4 GHz microwave energy with 100s of MW peak radiated power from a compact, cylindrical package. With a 20 kV charge voltage and 20 stages, this Marx Generator produced a 200 kV pulse onto a matched 20 Ohm impedance, resulting in a peak power of approximately 2 GW.


  • Maximum open-circuit voltage: 400 kV
  • Maximum peak voltage into matched load: 200 kV
  • Maximum repetition rate: 10 Hz
  • Energy per pulse: 400 J
  • Pulse rise-time: ~20 ns


The following items are included with this Marx Generator:

  • Marx Generator
  • High-voltage cable with quick connect
  • High-voltage power supply cable with quick connect
  • High-voltage trigger cable with quick connect
  • Two additional stages

The following item is required for proper implementation of this Marx Generator:

  • High-voltage, capacitor charging power supply
  • High-voltage trigger unit
  • Pressurized breathable dry air source
Parameter Description Value Unit
N Number of Marx Generator stages 20
Epulse Maximum Marx energy per pulse 400 J
Pmax Peak power to a matched load 200 GW
Vch Marx maximum charge voltage 20 kV
VE Peak Erected voltage 400 kV
Cstage Capacitance per Marx stage 100 nF
CE Erected capacitance 5 pF
Le Series Inductance 2 nH
Zm Marx Impedance 20 Ohm
L Marx Generator Length 39 In.
D Marx Generator Diameter 9.5 In.
PRFmax Maximum Burst-Mode PRF 10 Hz


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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