Russian SNM-11
Posted: Fri Mar 21, 2014 5:00 pm
Hi Guys,
I am trying to breathe life into a Russian SNM-11 neutron tube and it refuses to play ball with me, maybe because I don't speak russian to it. I followed the wiring scheme with a 47 M Ohm load resistor, and a CR coupling with a time constant of around 6-10 µs, and was expecting to see a pulse at least once a minute, but nothing!
Running it at around 1700 V and looking for a pulse on my scope, the baseline is fairly noisy at around 5-10 mv ripple, I imaghine it must be the 47 M Ohm resistor which is noisy, as the voltage supply usually has less ripple than that.
Do you guys have any magic spells ?
Steven
I am trying to breathe life into a Russian SNM-11 neutron tube and it refuses to play ball with me, maybe because I don't speak russian to it. I followed the wiring scheme with a 47 M Ohm load resistor, and a CR coupling with a time constant of around 6-10 µs, and was expecting to see a pulse at least once a minute, but nothing!
Running it at around 1700 V and looking for a pulse on my scope, the baseline is fairly noisy at around 5-10 mv ripple, I imaghine it must be the 47 M Ohm resistor which is noisy, as the voltage supply usually has less ripple than that.
Do you guys have any magic spells ?
Steven