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Employees of the Central Radio Laboratory, Leningrad, 1930. Losev is in fourth row, third from left. Oleg Vladimirovich Losev (sometimes spelled Lossev or Lossew in English; Russian: Оле́г Влади́мирович Ло́сев; 10 May 1903 – 22 January 1942) was a Russian and Soviet scientist and inventor [1] who made significant discoveries in the field of semiconductor junctions and ...
Any nonlinear electronic block driven by two signals with frequencies f 1 and f 2 would generate intermodulation (mixing) products. A multiplier (which is a nonlinear device) will generate ideally only the sum and difference frequencies, whereas an arbitrary nonlinear block will also generate signals at 2·f 1-3·f 2, etc. Therefore, normal ...
The refractive index of silicon is 3.96 (at 590 nm), [2] while air's refractive index is 1.0002926. [3] In general, a flat-surface uncoated LED semiconductor chip emits only light that arrives nearly perpendicular to the semiconductor's surface, in a cone shape referred to as the light cone, cone of light, [4] or the escape cone. [1]
Selection of a mixer type is a trade off for a particular application. [2] Mixer circuits are characterized by their properties such as conversion gain (or loss), noise figure and nonlinearity. [3] Nonlinear electronic components that are used as mixers include diodes and transistors biased near cutoff.
Recreation of the 1907 experiment by H. J. Round on the observation of electroluminescence from a point contact with a carborundum (silicon carbide) crystalIn some later experiments with cat's whisker detectors using a variety of substances, he passed current through them and noticed that some gave off light – the first known report of the effect of the light-emitting diode (LED).
WASHINGTON (Reuters) -Current laws and regulations are not enough to protect Americans from the risks of compounded versions of popular weight loss drugs, especially those bought online, outgoing ...
MADISON, Wis. — A 15-year-old girl who police say killed two people and wounded multiple others at a private Christian school in Wisconsin endured what appeared to be a tumultuous home life ...
A mixer-based detector (e.g., a Schottky diode-based double-balanced mixer) provides "the ultimate in phase noise floor performance" and "in system sensitivity." since it does not create finite pulse widths at the phase detector output. [2] Another advantage of a mixer-based PD is its relative simplicity. [2]
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