Search found 4 matches

by karlo
Wed Nov 05, 2008 2:36 am
Forum: FreeEMS Hardware Dev
Topic: Ion Sensing ideas and circuit designs
Replies: 46
Views: 68651

Re: Ion Sensing ideas and circuit designs

Would a boost converter be any simpler to make?
by karlo
Sun Nov 02, 2008 8:51 pm
Forum: FreeEMS Hardware Dev
Topic: Ion Sensing ideas and circuit designs
Replies: 46
Views: 68651

Re: Ion Sensing ideas and circuit designs

So does anyone have schematics for a 12V to 300VDC converter lying around?
by karlo
Sat Nov 01, 2008 8:15 pm
Forum: FreeEMS Hardware Dev
Topic: Ion Sensing ideas and circuit designs
Replies: 46
Views: 68651

Re: Ion Sensing ideas and circuit designs

Reading out the ion current isn't rocket science, but it does require a voltage in the region of 300V (I've seen 180V as well). This has been a showstopper for me so far. I've seen some designs which eliminate the 300V power supply by charging a capacitor to 300V with the 30kV (or so) spark and then...
by karlo
Thu Aug 21, 2008 1:37 pm
Forum: General FOSS EMS
Topic: Ion sensing and peak pressure position estimation
Replies: 9
Views: 21694

Re: Ion sensing and peak pressure position estimation

Has there been any progression on this? I'd like to have a go at building the ion sensing circuit outlined in http://vvnet.fi/ville/ion/DIY-Ion-Sensing-2.pdf . However, I'm not entirely proficient when it comes to electronics (I'm a programmer), esp. the HV supply is a little out of my league. While...