Hi. I am trying to get 250V pulse with rise time of maximum 2ns on 50ohm load. Right now I am just trying to see avalanche pulse like in the picture my supply is 220V DC. I am using ZTX415 and its simple configurations like in ZETEX application note HERE.
Instead of using coaxial cable I used 70pF capacitors. (I also tried using 1m -2m coaxial cable with open end)
But the signal I can see on 50ohm is like this:
I tried changing ZTX415 and anything but this didn't came into my mind since it is very basic circuit.
What might be the problem here? What are your advices?
* I am driving the transistor with arduino and giving 10us pulses every second.
Instead of using coaxial cable I used 70pF capacitors. (I also tried using 1m -2m coaxial cable with open end)
But the signal I can see on 50ohm is like this:
I tried changing ZTX415 and anything but this didn't came into my mind since it is very basic circuit.
What might be the problem here? What are your advices?
* I am driving the transistor with arduino and giving 10us pulses every second.