RE: Residual charge left on caps

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com> 

A while back I performed some MicroSim simulations to try to see what could 
be causing such a thing to occur.  I did include unequal leakage 
resistances as well as unequal capacitances, but I was unable to get any 
cumulative charge to build over multiple mains cycles.  It's got to be 
something non-linear, like coronal rectification.

Gary Lau
MA, USA



Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>

Hi Gary,

I wonder if differences in dialectric leakage of individual caps might
account for this?

Gerry R


  > Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com>
  >
  > On why MMC caps develop asymmetrical charges, and that it may be due to
  > corona, I've also seen my 4-element cap powered by a 4kV NST, develop
  > residual charges before I installed bleeder resistors.  I would have
  > guessed that 4kV would not generate that much corona, but I'm not sure.
  >
  > Moral of both stories is, I will always use bleeder resistors.
  >
  > Gary Lau
  > MA, USA
  >
  >