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... The minus sign indicates a 1800 The 0.5 mA change in iC gives a 1.65 V phase shift between input and change in vCE . output signals. Dr. D G Borse ...
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... Video signals from digital sources, such as a computer or DVD must be converted to analog signals before being displayed on an analog monitor. Beginning on February 18th, 2009 all television broadcasts in the United States will be in a digital format, requiring ATSC tuners (either internal or set-to ...
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... A detailed electrical characterization, made making use of sophisticated Finite Element Method (FEM) simulations and a careful realization of a measurement setup, allowed to collect confident estimates for the resistances for each of the samples above described. Several conduction behaviors have bee ...
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Valve RF amplifier



A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical radio frequency signal.Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
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