What is tuned voltage amplifier?
Definition: Tuned amplifiers are used to for the amplification of a specific frequency signal or a narrowband frequency signal. Basically high frequency or radio frequency signals are amplified using tuned amplifiers. Tuning (i.e., selecting) of frequency is done by using a tuned or resonant circuit at the load.
What is the basic principle behind tuned amplifiers?
A tuned circuit is capable of amplifying a signal over a narrow band of frequencies that are centered at resonant frequency. When the reactance of the inductor balances the reactance of the capacitor, in the tuned circuit at some frequency, such a frequency can be called as resonant frequency.
What is the response of tuned amplifier?
A tuned amplifier has a frequency response similar to that of a band-pass filter except with gain. In communications, tuned amplifiers are commonly used to separate a desired frequency from a composite waveform.
What are advantages and disadvantages of tuned amplifiers?
When a load of an amplifier circuit is changed with a tuned circuit, then this amplifier is named as a Tuned amplifier circuit….Advantages and Disadvantages
- The power loss is less due to the lack of collector resistance.
- Selectivity is high.
- The voltage supply of the collector is small due to the lack of Rc.
What is tuned amplifier and its types?
Based on Configurations. Multi-Stage Transistor Amplifier. RC Coupling Amplifier. Transformer Coupled Amplifier. Direct Coupled Amplifier.
What are types of tuned amplifier?
Types of Tuned Amplifiers
- Single tuned.
- Double tuned.
- Stagger tuned.
What is the main application of tuned amplifier?
The applications of the tuned amplifiers are: The circuits of video signal amplification in the wideband range use these amplifiers. For wireless long-distance communications, these amplifiers due to high gains are used. At the receiving stage, these are used as radio frequency amplifiers.
What is the other name of tuned amplifier?
Tuned amplifiers used for amplifying narrow band of frequencies hence it si also known as “narrow band amplifier” or “Band pass amplifier”. 5. Mention The Two Applications of tuned amplifiers. i) They are used in IF amplifiers in Radio and TV receivers.
What is a tuned amplifier circuit?
A simple transistor amplifier circuit consisting of a parallel tuned circuit in its collector load, makes a single tuned amplifier circuit. The values of capacitance and inductance of the tuned circuit are selected such that its resonant frequency is equal to the frequency to be amplified.
What is the frequency response of a single tuned amplifier?
frequency-response-of-single-tuned-amplifier. We know that the circuit’s impedance is extremely high & completely resistive within nature at the resonance frequency. As a result, the utmost voltage is attained across RL for an LC circuit at the frequency of resonant. The tuned amplifier bandwidth is given below. BW = f2-f1 => fr/Q
Why do we need a tuned voltage amplifier for RF stage?
In wireless communication, the RF stage requires a tuned voltage amplifier to choose the preferred carrier frequency as well as to change the passband signal which is allowed. The single tuned amplifier circuit diagram using capacitive coupling is shown below.
Why does a tuned amplifier have a high impedance?
As high impedance is offered only for the tuned frequency, all the other frequencies which get lower impedance are rejected by the tuned circuit. Hence the tuned amplifier selects and amplifies the desired frequency signal.