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DC bias information


In signal processing, when describing a periodic function in the time domain, the DC bias, DC component, DC offset, or DC coefficient is the mean value of the waveform. A waveform with zero mean or no DC bias is known as a DC balanced or DC free waveform.[1]

  1. ^ Kees Schouhamer Immink (March 1997). "Performance Assessment of DC-Free Multimode Codes". IEEE Transactions on Communications. 45 (3): 293–299. doi:10.1109/26.558690. The dc-balanced or dc-free codes, as they are often called, have a long history and their application is certainly not confined to recording practice.

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DC bias

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the DC bias, DC component, DC offset, or DC coefficient is the mean value of the waveform. A waveform with zero mean or no DC bias is known as a DC balanced...

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Biasing

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In electronics, biasing is the setting of DC (direct current) operating conditions (current and voltage) of an electronic component that processes time-varying...

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Tape bias

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Tape bias is the term for two techniques, AC bias and DC bias, that improve the fidelity of analogue tape recorders. DC bias is the addition of direct...

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Bias tee

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A bias tee is a three-port network used for setting the DC bias point of some electronic components without disturbing other components. The bias tee...

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Direct coupling

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AC signal (or information), the first circuit also provides DC bias to the second. Thus, DC blocking capacitors are not used or needed to interconnect...

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Bipolar transistor biasing

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a device, also known as bias point, quiescent point, or Q-point, is the point on the output characteristics that shows the DC collector–emitter voltage...

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Direct current

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telecommunications DC system using a DC-DC converter to provide any convenient voltage. Many telephones connect to a twisted pair of wires, and use a bias tee to...

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Len Bias

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just outside of the Washington, D.C. area. He was one of four children born to James Bias Jr. and Dr. Lonise Bias. He had a sister, Michelle, and two...

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Cognitive bias

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A cognitive bias is a systematic pattern of deviation from norm or rationality in judgment. Individuals create their own "subjective reality" from their...

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Cathode bias

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electronics, cathode bias (also known as self-bias, or automatic bias) is a technique used with vacuum tubes to make the direct current (dc) cathode voltage...

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Baseband

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baseband signal may have frequency components going all the way down to the DC bias, or at least it will have a high ratio bandwidth. A modulated baseband...

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Varicap

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Varactors are operated in a reverse-biased state, so no DC current flows through the device. The amount of reverse bias controls the thickness of the depletion...

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OCL amplifier

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the minority of designs with poorly controlled DC bias point increased sensitivity of the output DC bias point to process variations, although the last...

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Bias

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Bias is a disproportionate weight in favor of or against an idea or thing, usually in a way that is inaccurate, closed-minded, prejudicial, or unfair....

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List of cognitive biases

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Cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment. They are often studied in psychology, sociology and behavioral...

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Glow discharge

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The use of this frequency will establish a negative DC-bias voltage on the sample surface. The DC-bias is the result of an alternating current waveform that...

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Confirmation bias

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Confirmation bias (also confirmatory bias, myside bias, or congeniality bias) is the tendency to search for, interpret, favor, and recall information...

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Microphone

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from the transducer: DC-biased microphones, and radio frequency (RF) or high frequency (HF) condenser microphones. With a DC-biased condenser microphone...

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Phantom power

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Phantom power is sometimes used by workers in avionics to describe the DC bias voltage used to power aviation microphones, which use a lower voltage than...

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Equivalent circuit

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like tube and transistor circuits, by linearizing the circuit about the DC bias point Q-point, using an AC equivalent circuit made by calculating the equivalent...

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Capacitive coupling

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first circuit can pass through to the next while DC is blocked. This technique helps to isolate the DC bias settings of the two coupled circuits. Capacitive...

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Negative resistance

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device's terminals can be divided into a DC bias component ( V b i a s , I b i a s {\displaystyle V_{bias},\;I_{bias}} ) and an AC component ( Δ v , Δ i {\displaystyle...

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Offset

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or other geophysical readings DC bias or DC offset, the mean amplitude of a waveform (originally, a direct-current ("DC") waveform) Displacement (vector)...

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Systemic bias

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such as institutions. Systemic bias is related to and overlaps conceptually with institutional bias and structural bias, and the terms are often used interchangeably...

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Remanence

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small DC bias field. The amplitude of the alternating field is gradually reduced to zero to get an anhysteretic magnetization, and then the bias field...

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Josephson voltage standard

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first few steps means that for small DC bias currents, the junction voltage must be quantized. With a common bias current at or near zero, the voltage...

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