Latest Electromechanical Technical Articles

This project brief describes how to build and use an Arduino-compatible interface board that reads a 2-axis thumb…

This project brief describes how to build and use an Arduino-compatible interface board that reads a 2-axis thumb joystick and transmits its position over an RS-485 network.

An RTL glitch in an eFuse controller can permanently brick costly silicon. This article covers defense-in-depth FSM…

An RTL glitch in an eFuse controller can permanently brick costly silicon. This article covers defense-in-depth FSM design, redundant watchdogs, and formal SVA verification.

In this article, we explore when to choose a Class AB or Class D output stage for your piezo amplifier design. We'll also…

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.

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

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.

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

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

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

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

In this Radio Shack Classic Circuits Remix, we add modern microcontroller functionality to the vintage Electronic Timer…

In this Radio Shack Classic Circuits Remix, we add modern microcontroller functionality to the vintage Electronic Timer project for the Science Fair 65-in-1 kit.

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

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

In this project, we mix the old and the new by integrating present-day BLE technology with a vintage Science Fair computer kit.

In this project, we mix the old and the new by integrating present-day BLE technology with a vintage Science Fair computer kit.

In this article, we learn about core saturation and why it should be avoided in most applications. We then examine how…

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.

Eddy currents are a major loss mechanism in transformer cores. This article provides both in-depth and simplified…

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.

The hysteresis effect is one of the main sources of loss in ferromagnetic materials. In this article, we learn to…

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.

In this article, we use the concept of magnetic field energy to explore the relationship between a core's hysteresis loss…

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.

The formation of eddy currents can cause problems for magnetic cores at high frequencies. To mitigate these undesirable…

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.

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

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

This article discusses the following basic concepts related to magnetic materials: the magnetic dipole moment,…

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

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

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

In this project, which uses the Arduino IDE, we create and demonstrate a digital drawing pad using an ESP32-based e-paper…

In this project, which uses the Arduino IDE, we create and demonstrate a digital drawing pad using an ESP32-based e-paper display dev board, rotary encoders for drawing control, and an accelerometer for shake detection to initiate an erase.

Learn about using LTspice simulations to provide important insight into the performance of a switched-capacitor…

Learn about using LTspice simulations to provide important insight into the performance of a switched-capacitor voltage-inverting power supply.