The designing of this circuit can be done using two tuned circuits which are coupled. Pdf switchedmode tuned class e power amplifiers with parallel. Equivalently, the impedance at resonance is maximum. A more detailed ex planation of reactance and impedance can be found in understanding amateur radio tion the final amplifier tank, for example. These are amplifiers where the rfc or resistor load is replaced by a tuned circuit from our band pass filters or low pass filters tutorials. This property makes the parallel rlc circuit an important element in tuned amplifier loads. This article discusses what is a tuned amplifier, circuit diagram, different types like single, double and stagger, advantages and applications. Mullard tube circuits for audio amplifierspower amplifiers and pre amplifiers for monaural and stereophonic reproduction from microphone, radio, tape and. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. Tuned amplifiers are amplifiers that are designed to reject a certain range of frequencies below.
The response of the tuned amplifiers falls sharply below and above the resonant frequency. The usage of reactive components like l and c, minimizes the power loss, which makes the tuned amplifiers efficient. The selectivity and amplification of desired frequency is high, by providing higher impedance at resonant frequency. Polesandzeros pole and zero positions are useful for investigating responses of frequency selective. Class c amplifiers are also called tuned amplifiers. A change in the coupling of the two tuned circuits results in change in the shape of the frequency response curve. Electronic circuit analysis pdf notes eca pdf notes. Ec2251 electronic circuits ii department of ece 1 mahalakshmi engineering college tiruchirapalli6212. Seriestuned high efficiency rfpower amplifiers dtu orbit. Pdf in this paper, a new parallel circuit configuration of switchedmode tuned class e power amplifiers with load network consisting of a parallel. Double tuned amplifier double tuned amplifiers consists of inductively coupled two tuned circuits. Basic concepts, mos small signal model, common source amplifier with resistive load, diode connected load and current source load, source follower, common gate stage cascode, folded cascode amplifier, and their frequency response.
Benha university faculty of engineering at shoubra l. An amplifier which amplifies a specific frequency or a narrow band of. Analysis of single tuned amplifier, double tuned, stagger tuned amplifiers. A simple transistor amplifier circuit consisting of a parallel tuned circuit in its collector load makes a single tuned amplifier circuit. This refers to the coil and capacitor used in the output tuned circuit of the amplifier.
The tuner circuit is nothing but a lc circuit which is also called as resonant or tank circuit. This book is writ ten for all the people who love innovation. Electronic circuit analysis notes pdf eca notes pdf. It is therefore necessary to use a class c amplifier with a parallel resonant circuit. The basic tuned amplifier circuit looks as shown below. The doubletuned amplifier is one of the types of tuned amplifiers. Radio frequency amplifiers are tuned amplifiers in which the frequency of operation is governed by a tuned circuit. A smaller collector supply vcc would do, because of its little resistance in parallel tuned circuit.
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