At 2006-12-13 13:00, you wrote: >I need to design a pcb for a power supply set to 500V and 1ma current >output. I was wondering if there's anybody with experience that could give >me an idea as to what gap between components is recommended and what >minimum distance between tracks I should use. I am working in a very >limited space and I need optimal area use. The supply consists of a boost >controller and a series of diode/cap multiplier stages to bring the >voltage to the required value.
I'd have to do some digging but I have a chart around here somewhere showing such data. My recollection from working on NASA projects years ago was a rough rule of thumb of 3V max per mil of gap would keep you out of most troubles. It makes quite a bit of difference whether the conductors are covered (either inner layer or covered by sufficiently heavy soldermask), exposed in 1 atm air, or exposed in a vacuum (the last being the worst case, because in a vacuum once an arc is established it acts just like a wire). Let me know if you need me to dig up those tables. Steve Hendrix ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[email protected] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected]
