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LEAK TL/12 Point One Amplifier. The first commercially produced amplifier with distortion of 0.1% was the LEAK Type 15 "Point One" of 1945, using KT66 vacuum tubes (valves) connected as triodes, with 26 dB feedback over 4 stages including the output transformer. In 1948 LEAK produced the TL/12 which was also rated at 0.1% but featured improved ...
The "Tweed" 5F10 model, [2] launched in 1955, but not in time for the Fender catalog of that year, [3] was a 10-watt amplifier utilising a 6AV6 (from 1956 a 6AT6) preamplifier tube, 12AX7 phase inverter tube, [note 1] a pair of 6V6GT power amplifier tubes, and one 5Y3GT rectifier tube, [4] with a Jensen P10R 10-inch speaker. The amplifier had a ...
On June 10, 2014, Kevin Hayes was issued U.S. Patent 8,749,310 for "amplifier bias control". This patent covers the only known technique for observing the true underlying quiescent current (idle current) of an output tube (or transistor) under dynamic signal conditions, and then holding it to the stable target value with a precision of 99% or ...
A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s.
Valves with high g m thus tend to have lower noise at high frequencies. In the audio frequency range (below 1–100 kHz), "1/f" noise becomes dominant, which rises like 1/f. Thus, valves with low noise at high frequency do not necessarily have low noise in the audio frequency range.
Sales rose this year during the holiday shopping season even as Americans wrestled with elevated prices for many groceries and other necessities, according to new data. Holiday sales from the ...
The New York Jets are on a bye this week, but the drama swirling inside the troubled organization hasn't taken a break. Aaron Rodgers, who has been described as "banged up" for the past few months ...
A valve audio amplifier or vacuum tube audio amplifier is a valve amplifier used for sound reinforcement, sound recording and reproduction. Until the invention of solid state devices such as the transistor , all electronic amplification was produced by valve (tube) amplifiers.
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