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The Armstrong oscillator [1] (also known as the Meissner oscillator [2]) is an electronic oscillator circuit which uses an inductor and capacitor to generate an oscillation. The Meissner patent from 1913 describes a device for generating electrical vibrations, a radio transmitter used for on–off keying. Edwin Armstrong presented in 1915 some ...
Various attachments and blades are on the market, giving these machines a wide variety of uses. The blades can be separated into 5 main categories: cutting; tile, grout and masonry; sanding; scraping; and polishing. Cutting blades are standard saw blades with various tooth configurations for cutting different material.
The first cutter had an iron point to scratch the tiles. It was later replaced by the current tungsten carbide scratching wheel. Another built-in device introduced in 1960 was the snapping element. It allowed users to snap the tiles easily and not with the bench, the cutter handle or hitting the tile with a knee as it was done before.
In most ordinary oscillators, the nonlinearity is simply the saturation (clipping) of the amplifier as the amplitude of the sine wave approaches the power supply rails. The oscillator is designed to have a small-signal loop gain greater than one. The higher gain allows an oscillator to start by exponentially amplifying some ever-present noise. [11]
Armstrong oscillator which uses tickler coil Source File:TICKLER.png Date 18 May 2009 ... Other Instructions. Endorse this file for transfer by adding ...
Armstrong Tools was an American industrial hand tool manufacturer. [1] In its final years, it existed as a brand of Apex Tool Group , LLC and manufactured the majority of its tools in the United States, focusing mostly on aerospace, government, and military users.
A voltage-controlled crystal oscillator (VCXO) is used for fine adjustment of the operating frequency. The frequency of a voltage-controlled crystal oscillator can be varied a few tens of parts per million (ppm) over a control voltage range of typically 0 to 3 volts, because the high Q factor of the crystals allows frequency control over only a ...
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