Could you elaborate a little more, sir?A positive going pulse can tapped at Q9 emitter.
Hello everyone, I am trying to make avalanche based high voltage switcher. Before this circuit, I made an avalanche and marx-based switching circuit (Symmetric Avalanche Marx Generator) but I couldn't get the output characteristic I wanted due to the different switching times. It was nice to see the high voltage and low rise time though. That's why I want to do the switching in a stack structure instead of staggered, but I'm having trouble setting up the symmetric structure. I was able to simulate the positive pulse from 1000V to 0V in less than 5 ns, but I cannot show the negative pulse. How do I set up the negative stack?
I will be grateful if you could help me.
Best Regards
View attachment 179820
View attachment 179821
The trigger can be bestapplied through a transformer.
I'm referring to the post #1 schematic.Could you elaborate a little more
Hello sir, are you talking about 1:1 pulse transformer? Is the goal to isolate input and output? Is there any pulse transformer?The trigger can be bestapplied through a transformer
I can't find a specific product when I google the features you mentioned. Today is my last day to order from digikey. There is a 1:1 pulse transformer, but when you type toroid core, different things appear. I trigger the build with 5V and switch 2500V. Can you send me a link to a similar product (for example, from digikey) so I can research the parameters myself. Thank you sir.An avalanche transistor with floating emitter can't be well triggerred by a ground referenced voltage source, mainly because the generated avalanche pulse would run back to the trigger generator.
The transformer needs isolation according to the pulse voltage, low capacitance, winding ratio appropriate for the driver circuit e.g. 1:1. A small toroid core with tripple insulated wire should work.
The voltage reflected on the trig pin as you said. If I use 1:1, won't it still be reflected to the source at the same voltage, sir? (1:1 Pulse transformer Digikey) Is it something like this you're talking about?An avalanche transistor with floating emitter can't be well triggerred by a ground referenced voltage source, mainly because the generated avalanche pulse would run back to the trigger generator.
The transformer needs isolation according to the pulse voltage, low capacitance, winding ratio appropriate for the driver circuit e.g. 1:1. A small toroid core with tripple insulated wire should work.
Thank you very much. But finally, do I need to isolate the trig source and the ground of the transistor?The trigger voltage shall be applied between base and emitter of the transistor. That's not possible without a transformer,
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?