3.8kv 4ns nanopulser at 37khz repetition -Demonstration

[magpwr]

hi everyone,

This is my nanosecond project which i am working which will be implemented in Dally device at a later stage using coaxial cable.

I have attached the picture and video of my nanosecond generator powered by 200volts(4kv+) down to 24volts(1kv+).

I have also attached the source of information just in case anyone needs it for in dept understanding.

Take note the output is connected to 100ohms resistor at the moment can be reduced to 50Ohms.

Applying 200volts as supply i am able to achieve peak pulse 3kv to around 3.8kv at 220khz at 17% duty.

The advantage of this design is that it is coreless no special core is needed.
The wires can be folded and twisted together to form nH value inductor.

Capacitor needs to be ceramics which can handle at least 2kv .Resistors needs to be high wattage around 10watt to 20watt which is design to handle pulse.


Warning this is a high voltage experiment.Wrong move and your heart will stop working.

[dieter]

Sounds interesting. I yet have to go trough the attachments, but I do miss some info about the amps involved. however, say...


peak 3kV be 1 kV average, so (1000*1000v) / 100 ohm = 10'000W, and 17% of it would be 1700 Watt output. Could be more, your pulse shape looks more like 1500v average, so thats 22'500 * 0.17= 3825w...


Sure would be interesting to know the input watts.


Take care (yeah those kitchen rubber gloves look silly ^_^) and keep it up.


BR

[magpwr]

hi,

I have attached version 2.0 which produce 4.5kv ~4ns pulse using 200volts.

This time i am using the inductor values as shown in the pdf as attached in the 1st opening comment for this topic.

The peak pulse current at 200volts is 4.285volts across 1 ohms resistor which means it's 4.285 Amps at peak.

200volts x 4.285Amps = 857watt peak.

This time i am using 58khz at 1% duty to get around optimal output at  184ns pulse width to gate of mosfet.


scope pulse ->red,blue -> current