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Class AB vs. Class D: Understanding the Trade-Offs for Piezo Driver Design

Class AB vs. Class D: Understanding the Trade-Offs for Piezo Driver Design

In this article, we explore when to choose a Class AB or Class D output stage for your piezo amplifier design. We'll also examine the Class D stage's power supply requirements.


Design and Performance of the Class D Output Stage for Piezo Drivers

Design and Performance of the Class D Output Stage for Piezo Drivers

In this article, we explore the operation of a Class D stage with a capacitive load and how it can be used in piezo amplifier design.


Evaluating the Class AB Output Stage for Piezo Driver Design

Evaluating the Class AB Output Stage for Piezo Driver Design

We examine the basic requirements of piezoelectric amplifiers and how Class AB operation can meet them.


Constructing a Solar-Powered Snake Robot

Constructing a Solar-Powered Snake Robot

Learn how to create a batteryless crawling robot using basic electronic components and a 3D-printed chassis.


Three Ways to Accelerate Cell Layout in DTCO

Three Ways to Accelerate Cell Layout in DTCO

The device technology co-optimization (DTCO) methodology requires generating large numbers of layouts. This article introduces a few ways of speeding up this time-consuming process using automation.


Understanding the PDK Generation Process

Understanding the PDK Generation Process

In this article, we'll walk through the steps of generating a Process Design Kit (PDK) for digital standard cell libraries.


Understanding Inductors With Gapped Cores

Understanding Inductors With Gapped Cores

In this article, we explore the advantages of introducing an air gap to the magnetic core of an inductor.


Using Permeability to Understand Magnetic Core Saturation

Using Permeability to Understand Magnetic Core Saturation

In this article, we learn about core saturation and why it should be avoided in most applications. We then examine how different ways of defining permeability can help us predict the saturation flux density of a magnetic core.


Understanding How Laminated Cores Reduce Eddy Current Loss

Understanding How Laminated Cores Reduce Eddy Current Loss

Eddy currents are a major loss mechanism in transformer cores. This article provides both in-depth and simplified explanations of how core laminations work to mitigate the effects of eddy currents.


Hysteresis Loss: Estimation, Modeling, and the Steinmetz Equation

Hysteresis Loss: Estimation, Modeling, and the Steinmetz Equation

The hysteresis effect is one of the main sources of loss in ferromagnetic materials. In this article, we learn to calculate the hysteresis loss of a magnetic core and work through some example problems.


Understanding Magnetic Field Energy and Hysteresis Loss in Magnetic Cores

Understanding Magnetic Field Energy and Hysteresis Loss in Magnetic Cores

In this article, we use the concept of magnetic field energy to explore the relationship between a core's hysteresis loss and its B-H curve.


Understanding Dimensional Resonance in High-Frequency Magnetic Cores

Understanding Dimensional Resonance in High-Frequency Magnetic Cores

In this article, we explore the effect of dimensional resonance on the magnetic field distribution in high-frequency ferrite cores.


Understanding the Effect of Eddy Currents on the High-Frequency Behavior of Magnetic Cores

Understanding the Effect of Eddy Currents on the High-Frequency Behavior of Magnetic Cores

The formation of eddy currents can cause problems for magnetic cores at high frequencies. To mitigate these undesirable effects, we first need to understand them.


Diamagnetic, Paramagnetic, and Ferromagnetic Materials Explained

Diamagnetic, Paramagnetic, and Ferromagnetic Materials Explained

This article examines three different types of magnetic materials and how they react to an external magnetic field.


Key Concepts of Magnetic Materials

Key Concepts of Magnetic Materials

This article discusses the following basic concepts related to magnetic materials: the magnetic dipole moment, magnetization vectors, susceptibility, and permeability.


Switching Losses in Bipolar Junction Transistors

Switching Losses in Bipolar Junction Transistors

With the help of SPICE simulations, we examine two types of power dissipation that occur when BJTs are used as switches.


Common-Mode Noise in Differential Transmissions: Characteristics and Causes

Common-Mode Noise in Differential Transmissions: Characteristics and Causes

High-speed data transmission interfaces such as USB, HDMI, and Ethernet use differential signaling due to its superior noise immunity. Even so, some noise still appears. To remove it, we need to understand where it comes from and why.


What’s the Difference Between RS-232 and RS-485?

What’s the Difference Between RS-232 and RS-485?

Though both standards have long been used for serial communication, RS-485 offers valuable features that aren't available from RS-232. Learn more in this article.


Understanding RF Calibration Using Short, Open, Load, and Through Terminations

Understanding RF Calibration Using Short, Open, Load, and Through Terminations

In this article, we conclude our discussion of VNAs by walking through the steps of a SOLT calibration and examining the potential non-idealities of its reference standards.


Understanding Input Signal Swing in Op Amps

Understanding Input Signal Swing in Op Amps

This article, the first in a two-part series on op amp signal swing, explains the characteristics and limitations of an operational amplifier’s input voltages.