Latest Resistors Technical Articles

In this project article, we'll use a 555 timer IC to build an iconic musical instrument from the early days of synthesizers.

In this project article, we'll use a 555 timer IC to build an iconic musical instrument from the early days of synthesizers.

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.

For this project, I built a handheld resistor color code calculator and ohmmeter using the ATmega328 microcontroller and…

For this project, I built a handheld resistor color code calculator and ohmmeter using the ATmega328 microcontroller and a 1.8-inch color LCD display.

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.

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.

In this article, we use the concept of magnetic field intensity to help explain how complex permeability models the…

In this article, we use the concept of magnetic field intensity to help explain how complex permeability models the losses of a magnetic core.

Have you ever needed an unusual, non-standard resistance value for the project you are building? This article will…

Have you ever needed an unusual, non-standard resistance value for the project you are building? This article will provide you with a simple series of steps to build the resistance you need from a collection of resistors.

Learn ways to test an RF amplifier's stability, techniques to stabilize its operation, and how RF design software can…

Learn ways to test an RF amplifier's stability, techniques to stabilize its operation, and how RF design software can help you do both.

In this article, we’ll use SPICE simulations to explore the theory and behavior of negative voltages.

In this article, we’ll use SPICE simulations to explore the theory and behavior of negative voltages.

Take a closer look at the definition of the RF noise figure and discuss some subtleties to help avoid erroneous…

Take a closer look at the definition of the RF noise figure and discuss some subtleties to help avoid erroneous interpretations of this specification.

Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity…

Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity from 1 mV to 100 V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A.

Learn about l-type impedance matching equations through the quality factor (Q factor) of RC and RL circuits and the…

Learn about l-type impedance matching equations through the quality factor (Q factor) of RC and RL circuits and the series-parallel conversion of these circuits.l-

Learn about the admittance Smith chart to analyze a parallel connection of resistors, capacitors, and inductors, and see…

Learn about the admittance Smith chart to analyze a parallel connection of resistors, capacitors, and inductors, and see the circuit's behavior over the swept frequency range.

Learn how a series RLC circuit with arbitrary component values can be represented as a point on the Smith chart and how…

Learn how a series RLC circuit with arbitrary component values can be represented as a point on the Smith chart and how an impedance contour on the Smith chart can be used to describe the circuit's frequency response.

Learn how to derive the wave equations for a lossless transmission line and look at its infinite bandwidth and phase constant.

Learn how to derive the wave equations for a lossless transmission line and look at its infinite bandwidth and phase constant.

Learn about RTD (resistance temperature detector) signal conditioning through a four-wire configuration, ratiometric…

Learn about RTD (resistance temperature detector) signal conditioning through a four-wire configuration, ratiometric measurement, and input RC filters.

Learn the basics of ratiometric resistance measurements in analog to digital (A/D) converters, how it's measured, and…

Learn the basics of ratiometric resistance measurements in analog to digital (A/D) converters, how it's measured, and example uses in a digital multimeter (DMM), microprocessor, and various resistive sensors.

Learn about the aging behavior of resistors and amplifiers using temperature calculations and the Arrhenius equation to…

Learn about the aging behavior of resistors and amplifiers using temperature calculations and the Arrhenius equation to understand resistor drift, resistor stability, and op-amp drift.