Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 12: Problem 14

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. \(V_{L}(\mathrm{p})=4 \mathrm{~V}\)

Short Answer

Expert verified
The efficiency of the class B amplifier for supply voltage of 22V and peak output voltages of 20V and 4V can be calculated using the given formula. The calculated efficiencies are \(\frac{20^2}{2 * 22 * 20}\) and \(\frac{4^2}{2 * 22 * 4}\) respectively.

Step by step solution

01

Calculate efficiency for \(V_{L}(p) = 20\) volts

We can calculate the efficiency using the formula \(\eta = \frac{V_{L}(p)^2}{2 * V_{C C} * V_{L}(p)}\). Substituting the given values, we have the efficiency as \(\eta = \frac{20^2}{2 * 22 * 20}\)
02

Calculate efficiency for \(V_{L}(p) = 4\) volts

Similarly for the Peak output voltage of \(V_{L}(p) = 4\) V, substituting these values in the formula, we get the efficiency as \( \eta = \frac{4^2}{2 * 22 * 4}\)

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

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

A \(160-\mathrm{W}\) silicon power transistor operated with a heat sink \(\left(\theta_{S A}=1.5^{\circ} \mathrm{C} / \mathrm{W}\right)\) has \(\theta_{J C}=0.5^{\circ} \mathrm{C} / \mathrm{W}\) and a mounting insulation of \(\theta_{C S}=0.8^{\circ} \mathrm{C} / \mathrm{W}\). What maximum power can be handled by the transistor at an ambient temperature of \(80^{\circ} \mathrm{C}\) ? (The junction temperature should not exceed \(200^{\circ} \mathrm{C}\).)

Draw the circuit diagram of a class B npn push-pull power amplifier using transformercoupled input.

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

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?
See all solutions

Recommended explanations on Physics Textbooks

Physics of Motion

Read Explanation

Electric Charge Field and Potential

Read Explanation

Fields in Physics

Read Explanation

Thermodynamics

Read Explanation

Radiation

Read Explanation

Rotational Dynamics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free