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RE: Capacitor Orientation

Posted by Dave Garretson (A) on May 30, 2007 at 04:58:43

In Reply to: RE: Capacitor Orientation posted by Constrained 1 on May 29, 2007 at 20:49:55:

I'm still a bit confused & would appreciate further clarification. This is not a polarized cap. Rather, its color-coding (as I believe you imply) indicates winding orientation in order to obtain proper shield-to-ground connection. The application is two film bypass caps used on V+ & V- powering an op amp: one cap with red lead to V+ power pin and green lead to ground, and the other cap (I'm guessing here) with red lead to V- power pin, and green lead to ground. Thus on V-, a color-coded non-polarized film cap would be in reverse orientation compared to a polarized electrolytic connected to V-. Even though V- is more negative than ground, wouldn't a nonpolar cap still want its shield dumped to ground? Am I correct?

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