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.
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.
In this article, we examine a reactance modulator design that employs the variable capacitance of a bipolar 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.
In this article, we'll introduce the fundamental concepts of direct FM generation and examine a key FM modulation…
In this article, we'll introduce the fundamental concepts of direct FM generation and examine a key FM modulation circuit: the reactance modulator.
In this article, we discuss a tuning method designed specifically for Class E RF amplifiers.
In this article, we discuss a tuning method designed specifically for Class E RF amplifiers.
In this article, we examine the oscillation behavior of an LED blinker circuit in QSPICE and learn how to control its…
In this article, we examine the oscillation behavior of an LED blinker circuit in QSPICE and learn how to control its ON-time and pulse repetition frequency.
In this article, we analyze the operation of the Class E amplifier and examine the underlying assumptions of its design equations.
In this article, we analyze the operation of the Class E amplifier and examine the underlying assumptions of its design equations.
Class E RF amplifiers are designed to produce switch waveforms with a specific set of characteristics. In this article,…
Class E RF amplifiers are designed to produce switch waveforms with a specific set of characteristics. In this article, we discuss the advantages and limitations of these waveforms.
Learn how Class E amplifiers improve on the efficiency of Class D amplifiers at RF frequencies.
Learn how Class E amplifiers improve on the efficiency of Class D amplifiers at RF frequencies.
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'll learn about two important non-idealities of Class D power amplifiers and how they affect performance.
In this article, we'll learn about two important non-idealities of Class D power amplifiers and how they affect performance.
This project covers two fascinating and useful circuit design techniques—the Burton Transform and Dualling—that allow…
This project covers two fascinating and useful circuit design techniques—the Burton Transform and Dualling—that allow us to transform a passive network into an active network while building an audio noise filter.
This article will help you optimize your switch-mode regulator and driver circuits by explaining important sources of…
This article will help you optimize your switch-mode regulator and driver circuits by explaining important sources of MOSFET power dissipation.
In this article, we learn about the frequency response of the MOSFET common-source amplifier by examining its s-domain…
In this article, we learn about the frequency response of the MOSFET common-source amplifier by examining its s-domain transfer function.
The small-signal characteristics of MOSFETs play an important role in analog IC design. In this article, we learn how to…
The small-signal characteristics of MOSFETs play an important role in analog IC design. In this article, we learn how to model MOS transistors' small-signal behaviors.
MOS transistors exhibit a wide variety of second-order effects not covered by ideal models. To design analog integrated…
MOS transistors exhibit a wide variety of second-order effects not covered by ideal models. To design analog integrated circuits that will work in the real world, we need to understand these non-idealities.
This technical brief attempts to dispel some of the fog surrounding the three-character naming convention used to…
This technical brief attempts to dispel some of the fog surrounding the three-character naming convention used to describe ceramic caps.
Learn how output voltage and diode current affect the behavior of a step-up switching regulator.
Learn how output voltage and diode current affect the behavior of a step-up switching regulator.
Designing a buck converter? Read this article for practical guidance on selecting an output capacitance value.
Designing a buck converter? Read this article for practical guidance on selecting an output capacitance value.
Capacitors are a crucial component of step-down switching regulators. Learn about the different capacitor types and how…
Capacitors are a crucial component of step-down switching regulators. Learn about the different capacitor types and how each one affects regulator performance.
In this article, we’ll use LTspice simulations to more thoroughly understand output-voltage ripple and consider…
In this article, we’ll use LTspice simulations to more thoroughly understand output-voltage ripple and consider techniques for mitigating it within a charge pump circuit.
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