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Chapter 12: Problem 10

Draw the circuit diagram of a class A transformer-coupled amplifier using an \(n p n\) transistor.

Short Answer

Expert verified
The class A transformer-coupled amplifier using an n p n transistor circuit diagram includes a power supply, an n p n transistor, two transformers, and resistors setup as described in the steps.

Step by step solution

01

Identifying Necessary Components

The first step in this process is to identify the key components needed for a class A transformer-coupled amplifier. These include a power supply, an n p n transistor, input and output transformers, and resistors.
02

Drawing the n p n transistor

The next step involves drawing the n p n transistor at the center, which is the key component of our amplifier. The n p n transistor has three parts: the emitter (arrow pointing out), the base (middle part) and the collector (arrow pointing in).
03

Setup the Class A Amplifier

Connect the resistor from the power supply to the collector of the n p n transistor and connect the emitter to the ground. This forms the initial setup for a class A amplifier.
04

Input transformer

The input transformer is to be connected to the base and the emitter of the n p n transistor. The other side of the transformer is left for the inputs
05

Output Transformer and Final Connections

Connect the collector of the n p n transistor to one end of the output transformer. The other end of this transformer is our output terminal. Now, double-check the connections and make any necessary corrections to ensure everything is connected as described.

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Most popular questions from this chapter

A class A transformer-coupled amplifier uses a \(25: 1\) transformer to drive a \(4-\Omega\) load. Calculate the effective ac load (seen by the transistor connected to the larger turns side of the transformer).

What turns ratio transformer is needed to couple to an \(8-\Omega\) load so that it appears as an \(8-\mathrm{k} \Omega\) effective load?

Calculate the efficiency of a class \(\mathrm{B}\) amplifier for a supply voltage of \(V_{C C}=22 \mathrm{~V}\) driving a 4- \(\Omega\) load with peak output voltages of: a. \(V_{L}(\mathrm{p})=20 \mathrm{~V}\). b. \(V_{L}(\mathrm{p})=4 \mathrm{~V}\)

A transformer-coupled class A amplifier drives a \(16-\Omega\) speaker through a \(3.87: 1\) transformer. Using a power supply of \(V_{C C}=36 \mathrm{~V}\), the circuit delivers \(2 \mathrm{~W}\) to the load. Calculate: a. \(P(\) ac \()\) across transformer primary. b. \(V_{L}(\mathrm{ac})\). c. \(V(\mathrm{ac})\) at transformer primary. d. The rms values of load and primary current.

Sketch the circuit diagram of a quasi-complementary amplifier, showing voltage waveforms in the circuit.
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