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manual - BatteryStuff.com
manual - BatteryStuff.com

... In order to prevent excessive voltage drop and consequent loss of current capacity and efficiency, use proper size of input and output wires. Please note that as the current / length of wiring are increased, the thickness of the wiring will also be required to be increased. The thickness of wires an ...
13620.90... 99 DC Measuring Amplifier
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... In the voltage measurement operating mode the input [1.2] has an extremely high resistance of more than 1011 Ω. For precise measurements it is assumed that the source resistance is at least a factor 1000 lower, i.e. 108 Ω or less. With an open-circuit input it is unavoidable that the input will char ...
AD8228 数据手册DataSheet 下载
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... the part can operate on supplies up to ±18 V, it is well suited for applications where high common-mode input voltages are encountered. The AD8228 is available in 8-lead MSOP and SOIC packages. ...
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... only in expensive hybrid or modular products. A maximum multiplication error of ±0.25% is guaranteed for the AD534L without any external trimming. Excellent supply rejection, low temperature coefficients and long-term stability of the on-chip thin film resistors and buried Zener reference preserve a ...
RF5385 2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE Features
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... a viable and efficient method of combining FET output power without using -way combiners for both class-A operating conditions [14] and class-B operating conditions [15]. The optimum SE DFDA, however, requires 180 electrical spacing between the FETs [13], and means that the circuit is physically lar ...
Transmission Line Eq..
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... dissipated in a resistor [or conductance] or signal currents may be shunted to an AC ground via a reactance. In transmission line theory, a lossless transmission line does not dissipate power. Signals, will still gradually diminish however, as shunt reactances return the current to the source via th ...
Achieving and improving Level and Attenuation
Achieving and improving Level and Attenuation

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Scattering parameters

Scattering parameters or S-parameters (the elements of a scattering matrix or S-matrix) describe the electrical behavior of linear electrical networks when undergoing various steady state stimuli by electrical signals.The parameters are useful for electrical engineering, electronics engineering, and communication systems design, and especially for microwave engineering.The S-parameters are members of a family of similar parameters, other examples being: Y-parameters, Z-parameters, H-parameters, T-parameters or ABCD-parameters. They differ from these, in the sense that S-parameters do not use open or short circuit conditions to characterize a linear electrical network; instead, matched loads are used. These terminations are much easier to use at high signal frequencies than open-circuit and short-circuit terminations. Moreover, the quantities are measured in terms of power.Many electrical properties of networks of components (inductors, capacitors, resistors) may be expressed using S-parameters, such as gain, return loss, voltage standing wave ratio (VSWR), reflection coefficient and amplifier stability. The term 'scattering' is more common to optical engineering than RF engineering, referring to the effect observed when a plane electromagnetic wave is incident on an obstruction or passes across dissimilar dielectric media. In the context of S-parameters, scattering refers to the way in which the traveling currents and voltages in a transmission line are affected when they meet a discontinuity caused by the insertion of a network into the transmission line. This is equivalent to the wave meeting an impedance differing from the line's characteristic impedance.Although applicable at any frequency, S-parameters are mostly used for networks operating at radio frequency (RF) and microwave frequencies where signal power and energy considerations are more easily quantified than currents and voltages. S-parameters change with the measurement frequency, so frequency must be specified for any S-parameter measurements stated, in addition to the characteristic impedance or system impedance.S-parameters are readily represented in matrix form and obey the rules of matrix algebra.
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