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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 ...
Most regenerative receivers used this Armstrong circuit, in which the feedback was applied to the input (grid) of the tube with a "tickler coil" winding on the tuning inductor. The gain of any amplifying device, such as a vacuum tube , transistor , or op amp , can be increased by feeding some of the energy from its output back into its input in ...
It is an LC oscillator, in which the frequency is determined by a tuned circuit consisting of the inductor L1 and capacitor C. In the Armstrong circuit, a little of the energy from the output of of the transistor, the feedback necessary for oscillation, is fed back into the input (gate) circuit by a small coil L2 , called the " tickler coil ...
Armstrong oscillator which uses tickler coil Source File:TICKLER.png Date 18 May 2009 ... Other Instructions. Endorse this file for transfer by adding ...
Tickler may refer to: Tickler file, a collection of date-labeled file folders; Tickler oscillator, a type of electronic circuit; Ships. HMS ...
In 2011, Armstrong's net sales were $2.86 billion, with operating income of $239.2 million. [17] Armstrong Cabinets was sold by Armstrong World Industries to American Industrial Partners on October 31, 2012. Armstrong spun off its flooring business into a new company, Armstrong Flooring (NYSE: AFI) on April 1, 2016.
Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.Many applications call for a crystal oscillator frequency conveniently related to some other desired frequency, so hundreds of standard crystal frequencies are made in large quantities and stocked by electronics distributors.
A blocking oscillator (sometimes called a pulse oscillator) is a simple configuration of discrete electronic components which can produce a free-running signal, requiring only a resistor, a transformer, and one amplifying element such as a transistor or vacuum tube.