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  2. List of valve amplifier designs - Wikipedia

    en.wikipedia.org/.../List_of_valve_amplifier_designs

    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 ...

  3. Valve audio amplifier technical specification - Wikipedia

    en.wikipedia.org/wiki/Valve_audio_amplifier...

    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.

  4. Valve amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_amplifier

    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.

  5. Valve audio amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_audio_amplifier

    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.

  6. Electronic circuit design - Wikipedia

    en.wikipedia.org/wiki/Electronic_circuit_design

    To design any electrical circuit, either analog or digital, electrical engineers need to be able to predict the voltages and currents at all places within the circuit. [1] Linear circuits, that is, circuits wherein the outputs are linearly dependent on the inputs, can be analyzed by hand using complex analysis. Simple nonlinear circuits can ...

  7. Woman Wants to Call Off Her Wedding After Reaching ... - AOL

    www.aol.com/lifestyle/woman-wants-call-off-her...

    Related: Woman Asks Husband to Miss His Best Friend’s Wedding to Help Her with Foot Injury: ‘Ended in a Fight’ "I am so hurt, embarrassed, and lonely," the poster shared, detailing the money ...

  8. Valve RF amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_RF_amplifier

    A valve RF amplifier (UK and Aus.) or tube amplifier 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 ...

  9. Cheap, pre-owned EVs are about to flood the market. Is that a ...

    www.aol.com/finance/cheap-pre-owned-evs-flood...

    New data shows that even currently, EV prices in the used market are under pressure. According to Manheim’s latest used vehicle value index , used gas-powered car prices fell 3.5% in October ...