50V – 10A Bidirectional DC Motor Driver Using A3941
Motor

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...

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New current sensors have no magnetic circuits
Sensor

New current sensors have 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...

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A DC Motor Controller with Control Leds
Motor

A DC Motor Controller with 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...

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2020
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Control a stepper motor using Raspberry Pi
Raspberry Pi

Control a stepper motor using Raspberry Pi

Here is a nice tutorial @ raspberrypi.org on how to control a DC motor using Python. In this guide, you'll be controlling two motors from your Raspberry Pi using Python on the desktop. First, it's best just to learn how to control the motor. Then, once you have it working, you could...

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Sensing current on the high side
Basic Electronics

Sensing current on the high side

Michael Dunn @ edn.com writes: At their heart, the majority of DC current sense circuits start with a resistance in a supply line (though magnetic field sensing is a good alternative, especially in higher-current scenarios). One simply measures the voltage drop across the resistor...

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Low-cost current monitor tracks high dc currents
Test/Measurements

Low-cost current monitor tracks high dc currents

Susanne Nell @ edn.com has a design idea on how to measure high dc currents. To measure high levels of direct current for overload detection and protection, designers frequently use either a current-shunt resistor or a toroidal core and Hall-effect magnetic-field sensor. Both methods...

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Charge-pump topology doubles voltage
Basic Electronics

Charge-pump topology doubles voltage

Michael Dunn has designed a circuit that is able to double the input voltage and breaks DC path. I once needed a voltage doubler circuit with no DC leakage path between input and output, and ended up devising this unusual 556- (dual 555 timer) based circuit with a "floating" voltage...

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Temperature controlled Fan
Control

Temperature controlled Fan

Ahmad Al-Shalabi and Bassma Karbouj show us how to control a DC fan using easy to find components. The fan works when temperature reach into pre-specified threshold. The purpose of this project is creating a cooling system by controlling in a DC fan in a simple way without using...

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