Voltage Sources
https://www.electronics-lab.com/article/voltage-sources/
Introduction In this tutorial, we present in detail the architecture, functioning, and use of an important electronic element known as the voltage source. We first present the base concept which is the ideal voltage source and an introduction to the alternators and batteries is given since they represent the most common types of AC/DC voltage […]
AC & DC 200W Electronic Load
https://www.electronics-lab.com/ac-dc-200w-electronic-load/
This Electronic Load for DC and AC has some remarkable Features: Input voltage up to 400V Load current up to 10A Power dissipation up to 200W Remote controllable via (isolated USB interface) Suitable for DC and AC 7-segment displays for VRMS and ARMS more information and source files: www.elektormagazine.com
AC Resistance and Impedance
https://www.electronics-lab.com/article/ac-resistance-impedance/
Introduction The electric resistance is a property that characterizes how a particular component creates an opposition to the flow of current when a voltage difference is applied to its terminals. In this tutorial, we will focus on the opposition that a resistor generates when an AC voltage is applied to it. In the very first […]
AC Waveform and AC Circuit Theory
https://www.electronics-lab.com/article/ac-waveform-and-ac-circuit-theory/
Introduction When talking about current or voltage, these signals can be fitted into two main categories : DC and AC. DC states for “Direct Current“, this definition regroup the signals that are constant in time : their amplitude and sign (+ or -) remain unchanged. AC states for “Alternating Current“, these signals are alternating between […]
Free Elektor Article: Precision Control for DC Motors
https://www.electronics-lab.com/free-elektor-article-precision-control-dc-motors/
This control circuit will provide the correct rotational speed and direction of a 12-V DC motor. Nothing special in that? But there is definitely, when you consider the multitude of potential options for actuating the motor. You can adjust the speed manually with a potentiometer (‘pot’), using a DC voltage level between 0 and 5 (or […]
DC slotless motor runs at up to 40,000 rpm
https://www.electronics-lab.com/dc-slotless-motor-runs-at-up-to-40000-rpm/
Portescap has expanded its Ultra EC range of brushless DC slotless motors with the introduction of a ultra-high speed 2 pole motor, the 35ECS. The 35mm diameter slotless motor draws up to 330W max imum in continuous operation and sustains speeds up to 40,000 rpm. The new design comes in two lengths: the 35ECS60 at […]
Joulescope: Precision DC Energy Analyzer
https://www.electronics-lab.com/joulescope-precision-dc-energy-analyzer/
Joulescope™ enables designers, engineers, and makers to quickly and easily optimize the energy consumption and battery life of a target device. Joulescope is designed to automatically handle wide current ranges and rapid changes in energy consumption, while allowing the target device to run normally. Jetperch LLC writes: Measuring energy consumption during product development is crucial, […]
50V – 10A Bidirectional DC Motor Driver Using A3941
https://www.electronics-lab.com/50v-10a-bidirectional-dc-motor-driver-using-a3941/
This tiny board designed to drive bidirectional DC brushed motor of large current. DC supply is up to 50V DC. A3941 gate driver IC and 4X N Channel Mosfet IRLR024 used as H-Bridge. The project can handle a load up to 10Amps. Screw terminals provided to connect load and load supply, 9 Pin header connector […]
New current sensors have no magnetic circuits
https://www.electronics-lab.com/new-current-sensors-no-magnetic-circuits/
Clemens Valens @ elektormagazine.com discuss about LEM’s new current sensors which do not use the Hall effect make the measurement. Instead they integrate conductors for gradient measurement and provide immunity against the external fields. He writes: Here are some new integrated circuit transducers for AC and DC isolated current measurement up to 300 KHz that […]
A DC Motor Controller with Control Leds
https://www.electronics-lab.com/dc-motor-controller-control-leds/
Boris Landoni writes about a new open source project a DC motor controller with control LEDs: The circuit board we are presenting this time is based on the dual-bridge driver L298N, in a traditionally mounted version in a Multiwatt container with 15 staggered pins; it has two terminal blocks for attaching to DC motors or the […]