I have a number N of loads ranging between 3 and 16 (In the schematic I only draw 3 to avoid bloat) that requires well-timed high voltage pulses. The pulses have a width of 20~50 us and a period of 150 us

Instead of having separate pulse generators for each load, I would like to share the same generator circuit with all the loads, and send every pulse on sequence across the loads (so that every N pulses, the pulse is sent back to the first load)

What would be a reasonable way to route the pulses across the sequence of loads?

HV pulse router

  • 1
    \$\begingroup\$ Automotive distributors (single coil variety) use a non-contact mechanical switch to distribute the spark to individual spark plugs. You want something electronic? 4kV is a fairly high voltage for an electronic switch, but not impossible. \$\endgroup\$ Apr 22, 2019 at 1:49
  • \$\begingroup\$ How well preserved must the waveshape be? what risetime Must you provide? what ringing to tolerate? \$\endgroup\$ Apr 22, 2019 at 2:56
  • \$\begingroup\$ @analogsystemsrf risetime up to 5 us are acceptable, I was hoping to address any ringing with a critically damped RLC pass \$\endgroup\$
    – lurscher
    Apr 22, 2019 at 3:06
  • \$\begingroup\$ @SpehroPefhany something without movable parts would be preferred of course, I was researching into thyratrons for this purpose, but still unclear how to apply them here. The distributor idea sounds reasonable but I was wondering what other options would be there \$\endgroup\$
    – lurscher
    Apr 22, 2019 at 3:19
  • 2
    \$\begingroup\$ 15A 3.5kV 33% duty cycle > 50 kW pulse generator = unfeasible concept, with what budget? and no experience \$\endgroup\$ Apr 22, 2019 at 5:42

1 Answer 1


Maybe you can use a tetrode to control the thyratron


simulate this circuit – Schematic created using CircuitLab might need a capacitr between thyratron gate and input to compensate fro the tetrode capacitance,

  • \$\begingroup\$ Could you elaborate a bit? Confirm if I understand your concept correctly: you are suggesting to use a custom designed thyratron with multiple anodes, and add an additional leg with a voltage that shifts/selects which anode the thyratron current should target? I don't see how the pulses are sent through the multiple load outputs on this diagram \$\endgroup\$
    – lurscher
    Apr 23, 2019 at 15:42

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.