Hey, so I'm constructing a detector for my DIY gas chromatograph using corona discharge (or rather, the current flowing through it) to detect gasseous chemicals.
The design is simple enough, see attached, and it does produce a nice corona. It's time however to integrate it with the rest of my gear, and heres the trouble:
I would like to be able to swap the polarity at the electrodes. Some chemicals is easier ionizeable like that, same phenomenon as in mass spectrometry.
With this configuration, and the psu neg grounded as shown, can i swap Con1 and Con2 to get -HV at one terminal?
The voltage is selectable, as the CW-multiplier is tapped, but max output is probably around 7-8kV
The box before the transformer is just a simple transistor switching circuit, the HV board + transformer is really from an electric fly swatter.
Thanks in advance, I can't really get my head around it.
--Chris