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log voltage

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  • Log amplifier — Log Amplifier(Using OPAMP) IntroductionA log amplifier is the one for which the output voltage Vout is K times the natural log of the input voltage Vin. Numerically, V {out} = K lnfrac{V {in{V {ref Vref is the normalization constant in volts, K… …   Wikipedia

  • Voltage-to-current converter — Introduction For a variety of reasons, in low voltage electronics, voltage is a more frequently used data carrier. Thus electronic devices tend to be labeled with voltage inputs and outputs. However some devices are labeled in terms of current… …   Wikipedia

  • Electromagnetic Log — An Electromagnetic Log, sometimes called an EM Log , measures the speed of a vessel through water.It operates on the principle that: * when a conductor (such was water) passes through an electromagnetic field, a voltage is created and * the… …   Wikipedia

  • resistivity log — n a measure of the voltage differential of strata along the walls of a borehole when electrical current is passed through the strata. The resistivity log requires a fluidfilled hole to provide a conductive medium constantly between electrodes on… …   Coke&Coal Terminology

  • запись в журнал значений напряжения — [Интент] Тематики счетчик электроэнергии EN log voltage …   Справочник технического переводчика

  • Decibel — This article is about the ratio of measures. For sound or acoustic level, see Sound pressure. For other uses, see Decibel (disambiguation). Attenuation chart of an RG 6 Coaxial cable, measured in decibels per 100 feet of cable The decibel (dB) is …   Wikipedia

  • Formation evaluation — In petroleum exploration and development, formation evaluation is used to determine the ability of a borehole to produce petroleum. Essentially, it is the process of recognizing a commercial well when you drill one .Modern rotary drilling usually …   Wikipedia

  • Gain — For other uses, see Gain (disambiguation). In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of… …   Wikipedia

  • Translinear circuit — A translinear circuit is a circuit that carries out its function using the translinear principle. These are current mode circuits that can be made using transistors that obey an exponential current voltage characteristic this includes BJTs and… …   Wikipedia

  • Logarithmic video amplifier — A logarithmic video amplifier or LVA is typically part of radar and electronic countermeasures microwave systems and sonar navigation systems, used to convert a very large dynamic range input power to an output voltage that increases… …   Wikipedia

  • Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… …   Wikipedia

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