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Audiocap PPT Theta 2.0uF 200V Film/Foil Capacitor
Do non polar capacitors have a in and out orientation?
When replacing/upgrading poly capacitors, should I orient either lead to the speaker?
In truth ALL capacitors are polar. In this case, it is NOT polar insofar as the + and - voltages across it. But rather it IS polarized in two different ways:1: The metal film on the outermost area of the cap will act as a shield to some extent. To that end, the lead which connects to the outer layer (as opposed to the lead connected to the core) should be closer to ground.2: They are also very inductive. Very. To that end, this should be compensated for OR utilized where in your circuit an inductor may be beneficial or a detriment. The only true way to negate this is to use a non-inductive hookup which requires the polarity of each cap be opposite such that this inductance cancels for the most part. Bypass caps can simulate this effect but one must be careful in choosing the bypass size to not induce a sort of 'crossover notch' within the cap itself. If the bypass cap's reactance equals the inductance of the cap being bypassed, reversing the polarity of the bypass will transform the cap's already superb quality.So while these capacitors are non-polar in the DC arena, they indeed are very polarized in AC usage if the frequencies passing through it are affected by it's innate inductance. And in my experience, this almost always is an area that willenjoy notable improvement if used as above.
Date published: 2013-04-19