All About Circuits

Latest Passives Articles and Videos

Categories

Littelfuse SZSMF6L Automotive Transient Voltage Suppressor (TVS) Diodes | New Product Brief

Littelfuse SZSMF6L Automotive Transient Voltage Suppressor (TVS) Diodes | New Product Brief

Littelfuse SZSMF6L Automotive Transient Voltage Suppressor (TVS) Diodes deliver fast, reliable surge protection with sub-1ns response time and strong voltage-clamping performance. Watch and learn all about their features, specs, applications, and more!


Toshiba Adds Zener Diode Series for Better Circuit Reliability

Toshiba Adds Zener Diode Series for Better Circuit Reliability

The CMXBxxA Zener diode lineup also cuts leakage and simplifies upgrades for power line protection.


News Nov 27, 2025 by Joshua Tidwell
3 New Capacitors Target Automotive, Aerospace, and High-Voltage Designs

3 New Capacitors Target Automotive, Aerospace, and High-Voltage Designs

TDK, Kyocera AVX, and Vishay are rolling out new capacitors with durability and efficiency in mind.


News Nov 05, 2025 by Joshua Tidwell
YAGEO CE X5R Multilayer Ceramic Capacitors | New Product Brief

YAGEO CE X5R Multilayer Ceramic Capacitors | New Product Brief

YAGEO CE X5R Multilayer Ceramic Capacitors deliver high-density capacitance in a compact, embedded form factor tailored for advanced module integration. Watch and learn all about their features, specs, applications, and more!


YAGEO Tantalum-Nitride (TaN) AEC-Q200 NT Series Resistor | Featured Product Spotlight

YAGEO Tantalum-Nitride (TaN) AEC-Q200 NT Series Resistor | Featured Product Spotlight

YAGEO Tantalum-Nitride (TaN) AEC-Q200 NT Series Resistor deliver high precision and long-term stability through a robust thin-film construction built for demanding environments. Watch and learn all about their features, specs, applications, and more!


Basic Principles and Implementation of the Quadrature FM Demodulator

Basic Principles and Implementation of the Quadrature FM Demodulator

Learn how an analog multiplier or AND gate can function as a quadrature detector for FM demodulation.


FM-to-AM Conversion Using the Foster-Seeley Discriminator

FM-to-AM Conversion Using the Foster-Seeley Discriminator

Learn how the Foster-Seeley discriminator, a classic analog circuit for FM demodulation, achieves its superior linearity.


Understanding Slope Detectors for FM Demodulation

Understanding Slope Detectors for FM Demodulation

In this article, we'll analyze the single-tuned discriminator for FM-to-AM conversion. We'll then discuss the balanced discriminator and how it provides improved linearity across a wider bandwidth.


Bourns 15322x High Power High Ripple (HPHR) Chokes | New Product Brief

Bourns 15322x High Power High Ripple (HPHR) Chokes | New Product Brief

Bourns 15322x High Power High Ripple (HPHR) Chokes are designed for high-efficiency, high-current power applications that demand excellent thermal stability and reliability. Watch and learn all about their features, specs, applications, and more!


Introduction to Frequency Discriminators for FM Demodulation

Introduction to Frequency Discriminators for FM Demodulation

In this article, we will examine the basic principles of FM demodulation through the simplest frequency discriminator: a differentiator.


FM Generation Techniques: Solved Examples

FM Generation Techniques: Solved Examples

In this article, we'll solidify our understanding of the reactance modulator and Armstrong modulator circuits by working through a series of design problems.


TDK ADL8030VA Power Inductors | Digital Datasheet

TDK ADL8030VA Power Inductors | Digital Datasheet

TDK ADL8030VA Power Inductors is a compact, high-impedance inductor line designed for efficient signal and power handling in advanced communication and automotive systems. Watch and learn all about their features, specs, applications, and more!


Armstrong’s Method of FM Generation

Armstrong’s Method of FM Generation

This article explores the concept of indirect FM generation and the basic operation of the Armstrong modulator.


Your 2025 Back-to-School Guide to All About Circuits’ Educational Resources

Your 2025 Back-to-School Guide to All About Circuits’ Educational Resources

Are you a first year electronics engineering student? Or maybe working on a second or third degree in this field? All About Circuits has the resources you need: comprehensive textbooks, technical articles, calculators, videos, and more for your EE studies.


News Sep 19, 2025 by Jeff Child
SiTime Enters Resonator Market With Tiny MEMS-Based Devices

SiTime Enters Resonator Market With Tiny MEMS-Based Devices

Announced today, SiTime is expanding into a $4 billion resonator market with its Titan platform.


News Sep 17, 2025 by Jake Hertz
Understanding Varactor and PLL-Based FM Generation Using Crystal Oscillators

Understanding Varactor and PLL-Based FM Generation Using Crystal Oscillators

In this article, we examine two different methods of producing wideband FM signals. Both use crystal oscillators to provide improved frequency stability.


Improving the Frequency Deviation and Stability of a Direct FM Generator

Improving the Frequency Deviation and Stability of a Direct FM Generator

In this article, we explore the limitations of LC oscillators for direct FM generation and how to deal with them using multipliers and automatic frequency control (AFC) circuits.


Nexperia Targets USB With New PD Controllers and ESD Protection Diodes

Nexperia Targets USB With New PD Controllers and ESD Protection Diodes

Nexperia has introduced two programmable USB Type-C power delivery controllers and new ESD protection diodes for high-speed applications exceeding 10 GHz.


News Sep 04, 2025 by Arjun Nijhawan
Using Varactor Diodes for FM Signal Generation

Using Varactor Diodes for FM Signal Generation

Learn how a varactor diode's variable capacitance, together with an LC tank circuit, can drive a voltage-controlled oscillator (VCO) to create FM waveforms.


An FM Generator Circuit Using the Capacitance of a Collector-Base Junction

An FM Generator Circuit Using the Capacitance of a Collector-Base Junction

In this article, we examine a reactance modulator design that employs the variable capacitance of a bipolar junction transistor to modulate the output of a Colpitts oscillator.