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How to Select the Cutoff Frequency of Your Low-Pass Filter

How to Select the Cutoff Frequency of Your Low-Pass Filter

This article provides some tips on how to fine-tune the characteristics of a low-pass filter.


Reverse Polarity Protection: How to Protect Your Circuits Using Only a Diode

Reverse Polarity Protection: How to Protect Your Circuits Using Only a Diode

Connecting power with incorrect polarity is an easy mistake to make. Fortunately, protecting your device from reverse polarity is also quite easy.


What Is Electrical Noise and Where Does It Come From?

What Is Electrical Noise and Where Does It Come From?

This article provides insight into the fundamental characteristics and origins of the electrical signals that you always have but almost never want.


Basics of Phase Truncation in Direct Digital Synthesizers

Basics of Phase Truncation in Direct Digital Synthesizers

This article will discuss phase truncation in direct digital synthesizers.


A Simple, Compact Power Supply for Analog and Mixed-Signal Systems

A Simple, Compact Power Supply for Analog and Mixed-Signal Systems

This project demonstrates and discusses the performance and functionality of an inductorless ±5 V power-supply circuit.


Projects Jun 18, 2018 by Robert Keim
How to Choose the Frequency of Your Switching Regulator

How to Choose the Frequency of Your Switching Regulator

This article discusses some details—efficiency, noise, etc.—that influence the choice of operational frequencies for switch-mode power supplies.


Understanding the Dynamic Range Specification of an ADC

Understanding the Dynamic Range Specification of an ADC

This article will discuss the dynamic range specification of an ADC.


Build Your Own Negative Voltage Generator

Build Your Own Negative Voltage Generator

Everyone needs a negative voltage rail eventually, but most only have a single rail supply. This project will show you how to build a negative voltage generator that runs off a single rail supply!


Projects Jun 07, 2018 by Robin Mitchell
PCB Layout for a Charge-Pump Bipolar Power Supply

PCB Layout for a Charge-Pump Bipolar Power Supply

In this article we’ll look at the PCB design for a low-noise ±5 V inductorless power supply.


How to Design Schmitt Trigger Oscillators

How to Design Schmitt Trigger Oscillators

This article discusses the good and the bad regarding Schmitt Trigger RC oscillators. These oscillators are especially important because they are present in the internal oscillator in many popular MCUs.


Exactly How Schmitt Trigger Oscillators Work

Exactly How Schmitt Trigger Oscillators Work

This article is intended to help readers understand the good and the bad traits of Schmitt Trigger RC oscillators, which are especially important because they are present in the internal oscillator in popular MCUs.


Considerations for FPGA Implementation of Linear-Phase FIR Filters

Considerations for FPGA Implementation of Linear-Phase FIR Filters

This article will review considerations for efficient FPGA implementation of symmetric FIR filters.


Designing a Charge-Pump Bipolar Power Supply

Designing a Charge-Pump Bipolar Power Supply

This article presents and discusses a schematic design for a ±5 V inductorless power supply.


My 40-Year Love Affair with a Remarkable Amplifier—A Class B Amplifier for Audiophiles

My 40-Year Love Affair with a Remarkable Amplifier—A Class B Amplifier for Audiophiles

The Blomley amplifier was designed over forty years ago, is an alternative power amplifier design that suffers virtually no distortion, and provides a sound which has the presence often lacking in conventional amplifiers.


The PNP Transistor: Characteristics and Applications

The PNP Transistor: Characteristics and Applications

This article helps you understand what PNP transistors are, how they’re used, and why they’re less common than NPN transistors.


BJTs after Biasing: Analyzing BJTs with a Small-Signal Model

BJTs after Biasing: Analyzing BJTs with a Small-Signal Model

This article presents two circuits that can be used to analyze the small-signal behavior of a bipolar junction transistor.


Understanding the Early Effect

Understanding the Early Effect

This technical brief discusses the Early effect and how it influences the amplification characteristics of a bipolar junction transistor.


PLL Frequency Multiplication: Transient Response and Frequency Synthesis

PLL Frequency Multiplication: Transient Response and Frequency Synthesis

Does the addition of a feedback divider affect PLL transient response? We’ll look at this question and other frequency-multiplication topics in this article.


Understanding PLL Applications: Frequency Multiplication

Understanding PLL Applications: Frequency Multiplication

This article explains how a PLL can be used to produce a high-frequency clock from a low-frequency reference signal.


Designing and Simulating an Optimized Phase-Locked Loop

Designing and Simulating an Optimized Phase-Locked Loop

In this article we’ll explore PLL transient-response optimization using simulations and a design example.