Phase inversion

Phase reversal (English: phase inversion ) means to reverse the plus and minus terminals of an AC voltage source. This is implemented by means of an electronic circuit, or mechanically by simple, the two ports are changed, what should be clearly marked with polarity reversal.

Phase inversion is used in audio engineering to correct wrongly polarized sound signals in phase, or to properly polarized, but undesirable to reverse phase on purpose so cancel out these and the phases of the admixed original signal against each other and thus become softer or totally silent.

Polarity does not mean phase shift

The figure illustrates that a 180 ° phase-shifted in the fundamental frequency signal is not the same as the reverse-polarity signal. The phase reversal can be mathematically described as an inversion of the half-waves, or graphically as a vertical reflection of the same.

At a constant sinusoidal signal but a phase shift of 180 ° with a phase inversion can be equated.

• Amplifier technology
• Electrical circuit