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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

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    \$\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\$
    – Spehro 'speff' Pefhany
    Commented Apr 22, 2019 at 1:49
  • \$\begingroup\$ How well preserved must the waveshape be? what risetime Must you provide? what ringing to tolerate? \$\endgroup\$
    – analogsystemsrf
    Commented 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
    Commented 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
    Commented Apr 22, 2019 at 3:19
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    \$\begingroup\$ 15A 3.5kV 33% duty cycle > 50 kW pulse generator = unfeasible concept, with what budget? and no experience \$\endgroup\$
    – D.A.S.
    Commented Apr 22, 2019 at 5:42

1 Answer 1

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Maybe you can use a tetrode to control the thyratron

schematic

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

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  • \$\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
    Commented Apr 23, 2019 at 15:42

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