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- DC_bias abstract "When describing a periodic function in the frequency domain, the DC bias, DC component, DC offset, or DC coefficient is the mean value of the waveform. If the mean amplitude is zero, there is no DC offset. In contrast, various other frequencies are analogous to superimposed AC voltages or currents, hence called AC components or AC coefficients.The term originated in electronics, where it refers to a direct current voltage, but the concept has been extended to any representation of a waveform. The term's use is extended to two-dimensional transformations like the discrete cosine transform used in JPEG.A waveform without a DC component is known as a DC-balanced waveform. DC-balanced waveforms are useful in communications systems to avoid voltage imbalance problems between connected systems or components.DC offset is usually undesirable when it causes saturation or change in the operating point of an amplifier. An electrical DC bias will not pass through a transformer; thus a simple isolation transformer can be used to block or remove it, leaving only the AC component on the other side. In signal processing terms, DC offset can be reduced in real-time by a high-pass filter. When one already has the entire waveform, subtracting the mean amplitude from each sample will remove the offset. Often, very low frequencies are called "slowly changing DC" or "baseline wander".".
- DC_bias wikiPageID "2047311".
- DC_bias wikiPageRevisionID "593194210".
- DC_bias hasPhotoCollection DC_bias.
- DC_bias subject Category:Electricity.
- DC_bias subject Category:Electronics.
- DC_bias comment "When describing a periodic function in the frequency domain, the DC bias, DC component, DC offset, or DC coefficient is the mean value of the waveform. If the mean amplitude is zero, there is no DC offset. In contrast, various other frequencies are analogous to superimposed AC voltages or currents, hence called AC components or AC coefficients.The term originated in electronics, where it refers to a direct current voltage, but the concept has been extended to any representation of a waveform.".
- DC_bias label "DC bias".
- DC_bias label "DC offset".
- DC_bias label "Polarização CC".
- DC_bias sameAs DC_offset.
- DC_bias sameAs Polarização_CC.
- DC_bias sameAs m.06hf67.
- DC_bias sameAs Q2907415.
- DC_bias sameAs Q2907415.
- DC_bias wasDerivedFrom DC_bias?oldid=593194210.
- DC_bias isPrimaryTopicOf DC_bias.