[Open_electroporator] got my package today

[John Griessen]

On March 6, 2017 11:39:27 AM MST, Nathan McCorkle <nmz787 at gmail.com> wrote:
>I can't tell if the ugly traces is real or not... I'm using cheap
>(100MHz 'rated') probes 

If you connect them to the scope calibrator then adjust to square shape the overshoot might go away, but the low pulse is still odd.
 
>In any case, with the a pretty-looking pulse train being produced (the
>one I showed last), I hooked up the HV board and plugged in the
>external power supply. I also placed a 1/4W 33k resistor between the
>HV contacts. Running the program make for a high-pitch tweet/chirp
>noise, I'm guessing from the coils briefly heating up and expanding
>and sending an audible pressure-wave outward.
>
>Then I got out my 40kV-rated 1 GOhm resistor, and clipped that to a
>3rd oscilloscope channel, and found I could see the HV waveform 

Good.  Is it like the one I posted?
Where the HV output builds then plateaus as the train of 8 pulse s goes through the the transformer?

>
>So, John, how do I calculate the voltage division on the 1GOhm
>resistor? 

1/(1/R1+1/R2)=Total

Please trim replies and separate questions -- I,m using a phone.

John
-- JG's phone