Class-A Push-Pull Amplifier Theory

Krauss, H.

doi:10.1109/jrproc.1948.230913

Cited by 2 publications

(2 citation statements)

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“…A high-frequency power transformer is connected to the output of the collector of each transistor. The quiescent current of Q2 and Q1 flows in opposite directions through the corresponding halves of the primary of the output transformer, and as a result, there will be no magnetic saturation [10,4]. Class A design produces good linear amplifiers, but are wasteful of power [2].…”

Section: Operation Of Class a Push Pull Power Amplifiermentioning

confidence: 99%

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Design and Construction of an Atmospheric Pressure HF Plasma Source

Rashid

Herokuzzaman

Rahman

2019

JERR

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Atmospheric pressure plasma sources used in many industrial, environmental, light sources, biological, and medical applications. Aiming these prospects, an effort has been remunerated for the design and construction of a cost-effective atmospheric pressure high frequency (30 KHz) plasma source. The major sections include in this source are, (i) DC power suppliers, (ii) A set of Class A push-pull power amplifiers, (iii) Ferrite core high-frequency power transformer, (iv) Impedance matching network, and (v) Electrode design for plasma production. Two power suppliers have been considered; one is a 12V DC for biasing the base of the 2N3055 power, and the other is a 90V DC for biasing the Class A push-pull power amplifier. Class A push-pull power amplifier is chosen because of its high efficiency of about 50% concerning other types of amplifiers. Ferrite core high-frequency power transformer is designed with a turn ratio of 1:3 in order to step up the voltage to a certain level for producing atmospheric pressure plasma. An impedance matching network is designed to transfer maximum power from the source to the plasma load.

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Section: Operation Of Class a Push Pull Power Amplifiermentioning

confidence: 99%

“…These charge concentrations create Coulomb fields that affect the motion of many other charged particles away from the original charges. Thus elements of the plasma continuously affect each other, giving the plasma its characteristics collective behavior [4]. These local charge perturbations are confined to volumes of small dimensions.…”

Section: Introductionmentioning

confidence: 99%